Updated on 2024/03/29

写真a

 
HORIKOSHI MUNEKAZU
 
Organization
Graduate School of Science Department of Physics Associate Professor
School of Science Department of Physics
Title
Associate Professor
Affiliation
Institute of Science

Position

  • Graduate School of Science Department of Physics 

    Associate Professor  2023.04 - Now

  • School of Science Department of Physics 

    Associate Professor  2023.04 - Now

Degree

  • 博士（理学） （ The University of Electro-Communications ）

  • 修士（工学） （ The University of Electro-Communications ）

  • 学士（工学） （ The University of Electro-Communications ）

Research Areas

  • Natural Science / Semiconductors, optical properties of condensed matter and atomic physics  / ultracold atom experiment

Research Interests

  • quantum many-body system

  • quantum simulation

  • superfluidity

  • phase transition

  • equation of state

  • nuclear physics

  • condensation

  • cold atom

  • neutron star

  • laser cooling

  • laser

  • BCS-BEC crossover

Professional Memberships

  • THE PHYSICAL SOCIETY OF JAPAN

Awards

  • 日本物理学会若手奨励賞

    堀越 宗一

    2012.09   日本物理学会  

  • 学長賞

    堀越 宗一

    2007.03   電気通信大学  

  • 目黒会賞

    堀越 宗一

    2001.03   電気通信大学  

Job Career (off-campus)

  • Osaka Metropolitan University   Graduate School of Science

    2023.04 - Now

  • Osaka Metropolitan University   Graduate School of Science, NITEP   Project Associate Professor

    2022.04 - 2023.03

  • Osaka City University   Graduate School of Science, NITEP   Project Associate Professor

    2019.04 - 2022.03

  • The University of Tokyo   Graduate School of Science

    2015.04 - 2019.03

  • The University of Tokyo   The Graduate School of Engineering, Photon Science Center

    2010.10 - 2015.03

  • Japan Science and Technology Agency

    2007.04 - 2010.09

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Education

  • The University of Electro-Communications   Doctor's Course   Graduated/Completed

    2003.04 - 2007.03

  • The University of Electro-Communications   Master's Course   Graduated/Completed

    2001.04 - 2003.03

  • The University of Electro-Communications   Bachelor's Course   Graduated/Completed

    1997.04 - 2001.03

Papers

  • Creating a noninteracting Bose gas in equilibrium at finite temperature Reviewed

    Yiping Chen, Munekazu Horikoshi, Makoto Kuwata-Gonokami, Kosuke Yoshioka

    Physical Review A   105 ( 4 )   2022.04（ ISSN:2469-9926 ） （ eISSN:2469-9934 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/physreva.105.043312

    Other URL： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.105.043312/fulltext

  • Appropriate Probe Condition for Absorption Imaging of Ultracold Li-6 Atoms Reviewed

    Munekazu Horikoshi, Aki Ito, Takuya Ikemachi, Yukihito Aratake, Makoto Kuwata-Gonokami, Masato Koashi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   86 ( 10 )   2017.10（ ISSN:0031-9015 ）

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    Publishing type：Research paper (scientific journal)  

    One of the readily accessible observables in trapped cold-atom experiments is the column density, which is determined from the optical depth (OD) obtained from absorption imaging and the absorption cross section (sabs). Here, we report on a simple and accurate determination of OD for dense gases of light atoms such as lithium-6. We investigate theoretically and experimentally an appropriate condition for the probe intensity and duration to achieve a good signal-to-noise ratio by considering the effects of photon recoils and photon shot noises. As a result, we have succeeded in measuring OD, which reached 2.5 with a signal-to-noise ratio of 10 under a spatial resolution of 1.7 mu m.

    DOI： 10.7566/JPSJ.86.104301

  • Ground-State Thermodynamic Quantities of Homogeneous Spin-1/2 Fermions from the BCS Region to the Unitarity Limit Reviewed

    Munekazu Horikoshi, Masato Koashi, Hiroyuki Tajima, Yoji Ohashi, Makoto Kuwata-Gonokami

    PHYSICAL REVIEW X   7 ( 4 )   2017.10（ ISSN:2160-3308 ）

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    Publishing type：Research paper (scientific journal)  

    The understanding of physical properties of fermions in the unitary regime, where the s-wave scattering length in the collisional channel of particles is longer than both the interparticle distance and the size of the interaction potential, is a crucial issue for electron systems of high-temperature superconductivity, dilute nucleons in nuclei, and neutron stars. We experimentally determine various thermodynamic quantities of interacting two-component fermions at the zero-temperature limit from the BCS region to the unitarity limit. The obtained results are very accurate in the sense that the systematic error is within 4% in the unitary regime. Using this advantage, we can compare our data with various many-body theories. We find that an extended T-matrix approximation, which is a strong-coupling theory involving fluctuations in the Cooper channel, well reproduces our experimental results. We also find that the superfluid order parameter. calculated by solving the ordinary BCS gap equation with the chemical potential of interacting fermions is close to the binding energy of the paired fermions directly observed in a spectroscopic experiment and that obtained using a quantum Monte Carlo method.

    DOI： 10.1103/PhysRevX.7.041004

  • Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region Reviewed

    H. Tajima, P. van Wyk, R. Hanai, D. Kagamihara, D. Inotani, M. Horikoshi, Y. Ohashi

    Journal of Low Temperature Physics   187 ( 5-6 )   677 - 684   2017.06（ ISSN:1573-7357 ）

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    Publishing type：Research paper (scientific journal)  

    We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility χn. While quantum fluctuation effects on χn in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance χn in the weak-coupling BCS region. We also show that the calculated χn agrees well with the recent experiment on a 6Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid.

    DOI： 10.1007/s10909-016-1691-9

  • Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS-BEC Crossover Region Reviewed

    H. Tajima, P. van Wyk, R. Hanai, D. Kagamihara, D. Inotani, M. Horikoshi, Y. Ohashi

    JOURNAL OF LOW TEMPERATURE PHYSICS   187 ( 5-6 )   677 - 684   2017.06（ ISSN:0022-2291 ） （ eISSN:1573-7357 ）

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    Publishing type：Research paper (scientific journal)  

    We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen-Cooper-Schrieffer (BCS)-Bose-Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T -matrix approximation, we numerically compute the isothermal compressibility x(n). While quantum fluctuation effects on x(n) in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance x(n) in the weak-coupling BCS region. We also show that the calculated x(n) agrees well with the recent experiment on a Li-6 Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS-BEC crossover region of a strongly interacting Fermi superfluid.

    DOI： 10.1007/s10909-016-1691-9

  • Strong-coupling corrections to ground-state properties of a superfluid Fermi gas Reviewed

    Hiroyuki Tajima, Pieter van Wyk, Ryo Hanai, Daichi Kagamihara, Daisuke Inotani, Munekazu Horikoshi, Yoji Ohashi

    PHYSICAL REVIEW A   95 ( 4 )   2017.04（ ISSN:2469-9926 ） （ eISSN:2469-9934 ）

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    Publishing type：Research paper (scientific journal)  

    We theoretically present an economical and convenient way to study ground-state properties of a strongly interacting superfluid Fermi gas. Our strategy is that complicated strong-coupling calculations are used only to evaluate quantum fluctuation corrections to the chemical potential mu. Then, without any further strong-coupling calculations, we calculate the compressibility, sound velocity, internal energy, pressure, and Tan's contact, from the calculated mu without loss of accuracy, by using exact thermodynamic identities. Using a recent precise measurement of mu in a superfluid Li-6 Fermi gas, we show that an extended T-matrix approximation (ETMA) is suitable for our purpose, especially in the BCS-unitary regime, where our results indicate that many-body corrections are dominated by superfluid fluctuations. Since precise determinations of physical quantities are not always easy in cold Fermi gas physics, our approach would greatly reduce experimental and theoretical efforts toward the understanding of ground-state properties of this strongly interacting Fermi system.

    DOI： 10.1103/PhysRevA.95.043625

  • All-optical production of dual Bose-Einstein condensates of paired fermions and bosons with Li-6 and Li-7 Reviewed

    Takuya Ikemachi, Aki Ito, Yukihito Aratake, Yiping Chen, Masato Koashi, Makoto Kuwata-Gonokami, Munekazu Horikoshi

    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS   50 ( 1 )   2017.01（ ISSN:0953-4075 ） （ eISSN:1361-6455 ）

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    Publishing type：Research paper (scientific journal)  

    We report the first all-optical production of dual Bose-Einstein condensates (BECs) of paired Li-6 (fermion) and one spin state of Li-7 (boson) at the magnetic field where the s-wave interactions between fermions are resonant. Fermions are cooled efficiently by evaporative cooling and they serve as coolant for bosons. As a result, the dual condensates can be achieved by using a simple experimental apparatus and procedures, as in the case of the all-optical production of a single BEC. We show that the all-optical method enables us to realize variety of ultracold Bose-Fermi mixtures.

    DOI： 10.1088/1361-6455/50/1/01LT01

  • 21aAX-7 Determination of the equation of states for dilute neutron matter from cold atom

    Horikoshi Munekazu, Aratake Yukihito, Kuwata-Gonokami Makoto

    Meeting Abstracts of the Physical Society of Japan   71   368 - 368   2016（ ISSN:2189-079X ）

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  • Piring gap from the BCS region to the unitarity limit

    Horikoshi Munekazu, Kuwata-Gonokami Makoto

    Meeting Abstracts of the Physical Society of Japan   71   504 - 504   2016

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  • 21pBK-15 Meaurement of collisional cross section between boson and strongly interacting fermion

    Aratake Y., Horikoshi M., Yoshioka K., Kuwata-Gonokami M.

    Meeting Abstracts of the Physical Society of Japan   71   769 - 769   2016（ ISSN:2189-079X ）

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  • 18aBA-7 Construction of the Mass-Radius curve for neutron stars from a cold Fermi gas experiment

    Horikoshi Munekazu, Ikemachi Takuya, Aratake Yukihito, Kuwata-Gonokami Makoto

    Meeting Abstracts of the Physical Society of Japan   70   552 - 552   2015（ ISSN:2189-079X ）

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  • Universal Thermodynamics of a Unitary Fermi Gas Reviewed

    HORIKOSHI Munekazu, MUKAIYAMA Takashi, UEDA Masahito

    67 ( 4 )   257 - 261   2012.04（ ISSN:0029-0181 ）

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    Inter-particle interaction reaches maximum allowed by quantum mechanics at the unitarity limit. At the limit, thermodynamic properties of the system depend only on the temperature and density, but does not depend on any material-specific parameters. In this article, we describe the experimental determination of universal thermodynamics of an ultracold Fermi gas at the unitarity limit.

    CiNii Article

  • Measurement of an Efimov Trimer Binding Energy in a Three-Component Mixture of Li-6 Reviewed

    Shuta Nakajima, Munekazu Horikoshi, Takashi Mukaiyama, Pascal Naidon, Masahito Ueda

    PHYSICAL REVIEW LETTERS   106 ( 14 )   2011.04（ ISSN:0031-9007 ）

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    Publishing type：Research paper (scientific journal)  

    The binding energy of an Efimov trimer state was precisely determined via radio-frequency association. It is found that the measurement results shift significantly with temperature, but that the shift becomes negligible at the lowest temperature in our experiment. The shift-free part of the trimer binding energy reveals a significant deviation from the nonuniversal theory prediction based on a three-body parameter with a monotonic binding-energy dependence.

    DOI： 10.1103/PhysRevLett.106.143201

  • Nonuniversal Efimov Atom-Dimer Resonances in a Three-Component Mixture of Li-6 Reviewed

    Shuta Nakajima, Munekazu Horikoshi, Takashi Mukaiyama, Pascal Naidon, Masahito Ueda

    PHYSICAL REVIEW LETTERS   105 ( 2 )   2010.07（ ISSN:0031-9007 ）

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    Publishing type：Research paper (scientific journal)  

    We observed an enhanced atom-dimer loss due to the existence of Efimov states in a three-component mixture of Li-6 atoms. We measured the magnetic-field dependence of the atom-dimer loss in the mixture of atoms in state vertical bar 1 > and dimers formed in states vertical bar 2 > and vertical bar 3 >, and found two peaks corresponding to the degeneracy points of the energy levels of vertical bar 23 > dimers and the ground and first excited Efimov trimers. We found that the locations of these peaks disagree with universal theory predictions, in a way that cannot be explained by nonuniversal two-body properties. We constructed theoretical models that characterize the nonuniversal three-body physics of three-component Li-6 atoms in the low-energy domain.

    DOI： 10.1103/PhysRevLett.105.023201

  • Measurement of Universal Thermodynamic Functions for a Unitary Fermi Gas Reviewed

    Munekazu Horikoshi, Shuta Nakajima, Masahito Ueda, Takashi Mukaiyama

    SCIENCE   327 ( 5964 )   442 - 445   2010.01（ ISSN:0036-8075 ） （ eISSN:1095-9203 ）

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    Publishing type：Research paper (scientific journal)  

    Thermodynamic properties of matter generally depend on the details of interactions between its constituent parts. However, in a unitary Fermi gas where the scattering length diverges, thermodynamics is determined through universal functions that depend only on the particle density and temperature. By using only the general form of the equation of state and the equation of force balance, we measured the local internal energy of the trapped gas as a function of these parameters. Other universal functions, such as those corresponding to the Helmholtz free energy, chemical potential, and entropy, were calculated through general thermodynamic relations. The critical parameters were also determined at the superfluid transition temperature. These results apply to all strongly interacting fermionic systems, including neutron stars and nuclear matter.

    DOI： 10.1126/science.1183012

  • Atom interferometer using a free oscillation of Bose-Einstein Condensate on an atom chip Reviewed

    Ken Ichinakagawa, Munekazu Horikoshi

    Journal of Physics: Conference Series   185   012031   2009（ ISSN:1742-6596 ）

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    Publishing type：Research paper (international conference proceedings)  

    We have demonstrated a novel atom interferometer which uses a free oscillation of 87Rb BEC atoms in a magnetic harmonic potential on an atom chip. This interferometer can effectively suppress the dephasing due to the trap potential by applying two Bragg laser pulses with an time interval T equal to the oscillation period of the axial mode of the magnetic trap. We observed a high contrast (∼30 %) interference fringe signal for T = 58 ms. When we increased the time interval T to 97 ms, an interference fringe was washed out by the random phase fluctuation. We attributed this phase fluctuation to the external vibrational noise from the floor. © 2009 IOP Publishing Ltd.

    DOI： 10.1088/1742-6596/185/1/012031

  • Critical Temperature and Condensate Fraction of a Fermion Pair Condensate Reviewed

    Yasuhisa Inada, Munekazu Horikoshi, Shuta Nakajima, Makoto Kuwata-Gonokami, Masahito Ueda, Takashi Mukaiyama

    PHYSICAL REVIEW LETTERS   101 ( 18 )   180406-1 - 180406-4   2008.10（ ISSN:0031-9007 ） （ eISSN:1079-7114 ）

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    Publishing type：Research paper (scientific journal)  

    We report on measurements of the critical temperature and the temperature dependence of the condensate fraction for a fermion pair condensate of (6)Li atoms. Bragg spectroscopy is employed to determine the critical temperature and the condensate fraction after a fast magnetic field ramp to the molecular side of the Feshbach resonance. Our measurements reveal evidence of level off of the critical temperature and limiting behavior of condensate fraction near the unitarity limit.

    DOI： 10.1103/PhysRevLett.101.180406

  • Collisional properties of p-wave Feshbach molecules Reviewed

    Yasuhisa Inada, Munekazu Horikoshi, Shuta Nakajima, Makoto Kuwata-Gonokami, Masahito Ueda, Takashi Mukaiyama

    PHYSICAL REVIEW LETTERS   101 ( 10 )   2008.09（ ISSN:0031-9007 ） （ eISSN:1079-7114 ）

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    Publishing type：Research paper (scientific journal)  

    We have observed p-wave Feshbach molecules for all three combinations of the two lowest hyperfine spin states of (6)Li. By creating a pure molecular sample in an optical trap, we measured the inelastic collision rates of p-wave molecules. We have also measured the elastic collision rate from the thermalization rate of a breathing mode which was excited spontaneously upon molecular formation.

    DOI： 10.1103/PhysRevLett.101.100401

  • Collisional properties of p-wave Feshbach molecules (vol 101, art no 100401, 2008) Reviewed

    Yasuhisa Inada, Munekazu Horikoshi, Shuta Nakajima, Makoto Kuwata-Gonokami, Masahito Ueda, Takashi Mukaiyama

    PHYSICAL REVIEW LETTERS   101 ( 13 )   2008.09（ ISSN:0031-9007 ）

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  • アトムチップ―基板上で冷却原子を操作する― Reviewed

    中川賢一, 堀越宗一

    光学 / 応用物理学会分科会日本光学会   37 ( 7 )   391 - 396   2008.07（ ISSN:0389-6625 ）

  • Suppression of dephasing due to a trapping potential and atom-atom interactions in a trapped-condensate interferometer Reviewed

    Munekazu Horikoshi, Ken'ichi Nakagawa

    PHYSICAL REVIEW LETTERS   99 ( 18 )   180401-1 - 180401-4   2007.11（ ISSN:0031-9007 ）

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    Publishing type：Research paper (scientific journal)  

    We propose and demonstrate a novel trapped-condensate interferometer using optical Bragg diffractions in a harmonic magnetic potential, which can realize a long coherence time with low dephasing. Dephasing of wave packets due to the magnetic potential is canceled by setting the interrogation time equal to the oscillation period of the harmonic potential. The harmonic potential also helps to suppress dephasing due to condensate atom-atom interactions. An interference signal with a fringe contrast of 30% is observed at an interrogation time of 58 ms. For a longer interrogation time about 100 ms, the spatial coherence of the condensate is still maintained with low dephasing, although the interference fringe is washed out by external vibrational noise.

    DOI： 10.1103/PhysRevLett.99.180401

  • Coherent control of ballistic energy growth for a kicked Bose-Einstein condensate Reviewed

    M. Sadgrove, M. Horikoshi, T. Sekimura, K. Nakagawa

    EUROPEAN PHYSICAL JOURNAL D   45 ( 2 )   229 - 234   2007.11（ ISSN:1434-6060 ）

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    Publishing type：Research paper (scientific journal)  

    We consider a Bose-Einstein condensate which is split into two momentum components and then "kicked" at the Talbot time by an optical standing wave. The mean energy growth is shown to be suppressed or enhanced depending on the quantum phase between the two momentum components. Experimental verification is provided and we discuss possible implications of our results for recently suggested applications of kicked atoms.

    DOI： 10.1140/epjd/e2007-00277-3

  • Rectified momentum transport for a kicked Bose-Einstein condensate Reviewed

    Mark Sadgrove, Munekazu Horikoshi, Tetsuo Sekimura, Ken'ichi Nakagawa

    PHYSICAL REVIEW LETTERS   99 ( 4 )   2007.07（ ISSN:0031-9007 ）

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    Publishing type：Research paper (scientific journal)  

    We report the experimental observation of rectified momentum transport for a Bose-Einstein condensate kicked at the Talbot time (quantum resonance) by an optical standing wave. Atoms are initially prepared in a superposition of the 0 and -2hk(l) momentum states using an optical pi/2 pulse. By changing the relative phase of the superposed states, a momentum current in either direction along the standing wave may be produced. We offer an interpretation based on matter-wave interference, showing that the observed effect is uniquely quantum.

    DOI： 10.1103/PhysRevLett.99.043002

  • Condensate interferometer on an atom chip

    Munekazu Horikoshi

    2007.03

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    Publishing type：Doctoral thesis  

  • Dephasing due to atom-atom interaction in a waveguide interferometer using a Bose-Einstein condensate Reviewed

    Munekazu Horikoshi, Ken'ichi Nakagawa

    PHYSICAL REVIEW A   74 ( 3 )   2006.09（ ISSN:1050-2947 ）

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    Publishing type：Research paper (scientific journal)  

    A Mach-Zehnder-type atom interferometer with a Bose-Einstein condensate has been investigated on an atom chip by using optical Bragg diffraction. A phase shift and a contrast degradation, which depend on the atomic density and the trapping frequency of the magnetic-guide potential, have been observed. Also, the output wave packets were found to exhibit a spatial interference pattern. The atom-atom interaction and the guide potential induce the spatially inhomogeneous phase evolution of the wave packets in each arm of the interferometer. The observed contrast degradation can be quantitatively explained as a dephasing due to this inhomogeneous phase evolution.

    DOI： 10.1103/PhysRevA.74.031602

  • Atom chip based fast production of Bose-Einstein condensate Reviewed

    M Horikoshi, K Nakagawa

    APPLIED PHYSICS B-LASERS AND OPTICS   82 ( 3 )   363 - 366   2006.03（ ISSN:0946-2171 ）

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    Publishing type：Research paper (scientific journal)  

    We have developed a simple method for the fast and efficient production of a Bose-Einstein condensate (BEC) on an atom chip. By using a standard six-beam magneto-optical trap and light-induced atom desorption for loading, 3x10(7) Rb-87 atoms are collected within 1 s and loaded into a small-volume magnetic potential of the chip with high efficiency. With this method, a BEC of 3x10(3) atoms is realized within a total time of 3 s. We can realize a condensate of up to 2x10(4) atoms by reducing three-body collisions. The present system can be used as a fast and high-flux coherent matter-wave source for an atom interferometer.

    DOI： 10.1007/s00340-005-2083-z

  • Atom chip based fast production of Bose-Einstein condensate Reviewed

    M. Horikoshi, K. Nakagawa

    Applied Physics B   2   362 - 6   2006.01（ ISSN:1432-0649 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s00340-005-2083-z

  • Simple and efficient magnetic transport of cold atoms using moving coils for the production of Bose-Einstein condensation Reviewed

    K Nakagawa, Y Suzuki, M Horikoshi, JB Kim

    APPLIED PHYSICS B-LASERS AND OPTICS   81 ( 6 )   791 - 794   2005.10（ ISSN:0946-2171 ）

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    Publishing type：Research paper (scientific journal)  

    We have developed a simple magnetic transport method for the efficient loading of cold atoms into a magnetic trap. Laser-cooled Rb-87 atoms in a magneto-optical trap (MOT) are transferred to a quadrupole magnetic trap and they are then transported as far as 50 cm by moving magnetic trap coils with a low excess heating of atoms. A light induced atom desorption technique helps to reduce the collision loss during the magnetic transport. Using this method, we can load cold Rb-87 atoms into a magnetic trap in an ultra high vacuum chamber with high efficiency, and we can produce Rb-87 condensate atoms.

    DOI： 10.1007/s00340-005-1953-8

  • Simple and efficient magnetic transport of cold atoms using moving coils for the production of Bose-Einstein condensation Reviewed

    K. Nakagawa, Y. Suzuki, M. Horikoshi, J. B. Kim

    Applied Physics B   81   791 - 794   2005.10（ ISSN:1432-0649 ）

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s00340-005-1953-8

  • Fast and efficient production of Bose-Einstein condensate atoms based on an atom chip Reviewed

    Munekazu Horikoshi, Yusuke Suzuki, KeN'Ich Nakagawa

    IQEC, International Quantum Electronics Conference Proceedings   2005   1464 - 1465   2005

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    Publishing type：Research paper (international conference proceedings)  

    We developed a fast and efficient method to produce Bose-Einstein condensation on an atom chip in a small glass cell. 87Rb condensate atoms are realized within 3s and the maximum number of condensation was 20,000.

    DOI： 10.1109/IQEC.2005.1561103

  • A highly stable mm-wave synthesizer realized by mixing two lasers locked to an optical frequency comb generator Reviewed

    M Musha, A Ueda, M Horikoshi, K Nakagawa, M Ishiguro, K Ueda, H Ito

    OPTICS COMMUNICATIONS   240 ( 1-3 )   201 - 208   2004.10（ ISSN:0030-4018 ） （ eISSN:1873-0310 ）

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    Publishing type：Research paper (scientific journal)  

    Millimeter signal generation with high spectral purity and low phase fluctuations up to 100 GHz were demonstrated with an optical method in which two external-cavity laser diodes were phase-locked to an electro-optic modulator (EOM)-based optical frequency comb generator (OFCG). The additional phase noise caused from the cavity fluctuation in OFCG was completely canceled, and the phase noise of the heterodyne beat note of two LDs was determined only by that of the signal generator below offset frequency of 10 kHz. The detailed investigation of such a high frequency signal had never been done before, and the measured frequency of 100 GHz was limited only by the bandwidth of the phase noise detection system, and can be expanded up to more than 1 THz. (C) 2004 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.optcom.2004.06.028

  • ワイヤートラップによる87Rb原子のボース凝縮体生成

    堀越 宗一

    電気通信大学   2003.03

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    Publishing type：Master’s thesis  

  • 光位相同期による原子干渉用光源の開発とその評価

    堀越 宗一

    電気通信大学   2001.03

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    Publishing type：Thesis (other)  

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MISC

  • s波散乱長で支配される普遍的物理法則

    堀越宗一

    しょうとつ(Web)   14 ( 5 )   59‐78 (WEB ONLY)   2017.09

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  • 冷却原子実験から希薄中性子物質へ

    堀越宗一

    原子核研究   61 ( 1 )   58‐69   2016.09（ ISSN:0367-4169 ）

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  • 9aAW-7 Determination of the universal equation of state of s-wave interacting Fermi many-body system

    Ikemachi Takuya, Ito Aki, Horikoshi Munekazu, Koashi Masato, Kuwata-Gonokami Makoto

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   80 - 80   2014.08（ ISSN:1342-8349 ）

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  • 9aAW-8 Density fluctuation in an interacting Fermi gas

    Ito Aki, Ikemachi Takuya, Horikoshi Munekazu, Kuwata-Gonokami Makoto, Koashi Masato

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   81 - 81   2014.08（ ISSN:1342-8349 ）

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  • Evaluation of effective imaging resolution by observing atomic shot noise

    Ito Aki, Ikemachi Takuya, Horikoshi Munekazu, Kuwata-Gonokami Makoto, Koashi Masato

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   152 - 152   2013.08（ ISSN:1342-8349 ）

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  • Temperature measurements of the ultracold interacting Fermi gas

    Ikemachi Takuya, Ito Aki, Horikoshi Munekazu, Kuwata-Gonokami Makoto

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   152 - 152   2013.08（ ISSN:1342-8349 ）

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  • 19pAL-6 Realization of quantum degenerate state of ^6Li-^7Li mixture

    Togashi Kohei, Horikoshi Munekazu, Kuwata-Gonokami Makoto

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   156 - 156   2012.08（ ISSN:1342-8349 ）

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  • 26pXA-8 Understanding of dilute neutron matters from cold atom experiments

    Horikoshi Munekazu

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   226 - 226   2012.03（ ISSN:1342-8349 ）

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  • 27pAB-9 Measurement thermodynamics of ultracold atom at arbitrary scatter length

    Togashi Kohei, Otsu Toshio, Metz Jonas, Horikoshi Munekazu, Koashi Masato, Kuwata-Gonokami Makoto

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   241 - 241   2012.03（ ISSN:1342-8349 ）

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  • 28pRD-4 Measurement of an Efimov trimer binding energy in an ultracold three-component mixture of ^6Li

    Nakajima Shuta, Horikoshi Munekazu, Mukaiyama Takashi, Naidon Pascal, Ueda Masahito

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   229 - 229   2011.03（ ISSN:1342-8349 ）

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  • 24aRP-13 Efimov physics in lithium 6

    Naidon Pascal, Nakajima Shuuta, Horikoshi Munekazu, Mukaiyama Takashi, Ueda Masahito

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   128 - 128   2010.08（ ISSN:1342-8349 ）

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  • 22pTD-8 Atom-dimer scattering in an ultracold three component mixture of ^6Li

    Nakajima Shuta, Horikoshi Munekazu, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   206 - 206   2010.03（ ISSN:1342-8349 ）

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  • 22pTD-9 Measurement of universal thermodynamic functions for a unitary Fermi gas

    Horikoshi M., Nakajima S., Ueda M., Mukaiyama T.

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   206 - 206   2010.03（ ISSN:1342-8349 ）

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  • 26pZF-5 Atom loss in the ultracold three component mixture of ^6Li

    Nakajima Shuta, Horikoshi Munekazu, Pradhan Swarupananda, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   64 ( 2 )   82 - 82   2009.08（ ISSN:1342-8349 ）

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  • 30pSD-12 Sound propagation in an elongated unitary gas

    Horikoshi M., Nakajima S., Inada Y., Pradhan Swarupananda, Ueda M., Mukaiyama T.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   188 - 188   2009.03（ ISSN:1342-8349 ）

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  • 20aZA-5 Comparison of methods for determining the transition temperature at the unitarity limit

    Nakajima Shuta, Horikoshi Munekazu, Inada Yasuhisa, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   96 - 96   2008.08（ ISSN:1342-8349 ）

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  • 20aZA-6 Elastic and Inelastic Collisional Properties of p-wave Feshbach Molecules

    Inada Yasuhisa, Horikoshi Munekazu, Nakajima Shuta, Kuwata-Gonokami Makoto, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   96 - 96   2008.08（ ISSN:1342-8349 ）

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  • 25pQD-1 Universal behavior of a strongly interacting molecular condensate

    Inada Yasuhisa, orikoshi Munekazu, Nakajima Shuta, Kuwata-Gonokami Makoto, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   186 - 186   2008.02（ ISSN:1342-8349 ）

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  • 25pQD-2 Superfluid phase transition in the unitarity limit

    Horikoshi M., Inada Y., Nakajima S., Ueda M., Mukaiyama T.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   186 - 186   2008.02（ ISSN:1342-8349 ）

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  • 22pRG-1 Bose-Einstein Condensates in pulsed optical lattices

    Sadgrove Mark, Horikoshi Munekazu, Sekimura Tetsuo, Nakagawa Ken'ichi

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   176 - 176   2007.08（ ISSN:1342-8349 ）

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  • 24pRH-11 Condensate Fraction of Strongly Interacting ^6Li_2 Molecules

    Inada Yasuhisa, Horikoshi Munekazu, Nakajima Shuta, Kuwata-Gonokami Makoto, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   206 - 206   2007.08（ ISSN:1342-8349 ）

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  • 24pRH-10 BCS-BEC Crossover Physics with a Gas of ^6Li Atoms

    Nakajima Shuta, Inada Yasuhisa, Horikoshi Munekazu, Kuwata-gonogami Makoto, Ueda Masahito, Mukaiyama Takashi

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   206 - 206   2007.08（ ISSN:1342-8349 ）

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  • 20aXK-11 Shift in fundamental quantum resonance for atoms in a pulsed optical lattice

    Sadgrove Mark, Horikoshi Munekazu, Sekimura Tetsuo, Nakagawa Ken'ichi

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   158 - 158   2007.02（ ISSN:1342-8349 ）

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Presentations

  • Evaluation of effective absorption cross section and saturated light intensity in absorption imaging method Domestic conference

    K. Yoneda, K. Kato, S. Inouye, M. Horikoshi

    2023.09 

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    Presentation type：Oral presentation (general)  

  • Evaluation of virial expansion coefficients over the BCS-BEC crossover regime Ⅱ Domestic conference

    H. Funaba, K. Yoneda, K. Kato, S. Inouye, M. Horikoshi

    2023.03 

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    Presentation type：Oral presentation (general)  

  • Toward complete of the phase diagram of the BCS-BEC crossover International conference

    Munekazu Horikoshi

    Clustering as a Window on the Hierarchical Structure of Quantum Systems -CLUSHIQ2022 (EMMI Workshop)-  2022.11 

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    Presentation type：Oral presentation (general)  

  • Measurement of isothermal compressibility over the BCS-BEC crossover regime Domestic conference

    K. Yoneda, H. Funaba, K. Kato, S. Inouye, M. Horikoshi

    2022.09 

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    Presentation type：Oral presentation (general)  

  • Optimization of ultracold 6Li experiments using Bayesian optimization Domestic conference

    T. Kawaguchi, H. Funaba, K. Kato, S. Inouye, M. Horikoshi

    2022.09 

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    Presentation type：Oral presentation (general)  

  • Evaluation of virial expansion coefficients over the BEC-BCS crossover regime Domestic conference

    H. Funaba, K. Yoneda, K. Kato, S. Inouye, M. Horikoshi

    2022.09 

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    Presentation type：Oral presentation (general)  

  • 冷却分子を用いた励起分子状態の精密分光 Invited Domestic conference

    堀越宗一

    理研シンポジウム: 冷却分子・精密分光シンポジウム  2022.08  理化学研究所

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    Presentation type：Oral presentation (invited, special)  

    Venue：理化学研究所、和光市  

  • 冷却原子を用いた核物質状態方程式の量子シミュレーション Invited Domestic conference

    堀越宗一

    RCNP研究会「低エネルギー核物理と高エネルギー天文学で読み解く中性子星」  2022.08 

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    Presentation type：Oral presentation (invited, special)  

    Venue：大阪大学  

  • ベイズ最適化を用いた圧縮磁気光学トラップの自動最適化 Invited Domestic conference

    堀越宗一

    第７回　量子技術・機械学習 融合ミーティング  2022.03 

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    Presentation type：Oral presentation (invited, special)  

    Venue：オンライン開催  

  • Realization of a 671nm External Cavity Diode Laser Stabilized by Iodine Molecules and Application for Ultracold Li Experiments Domestic conference

    Koki Tanizawa, Munekazu Horikoshi, Kohei Kato, Shin Inouye

    2020.09 

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    Presentation type：Oral presentation (general)  

  • Ultracold AMO experiment for quantum few-body and many-body Invited

    Munekazu Horikoshi

    SNP and CLUSHIQ Seminar  2020.06 

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    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

  • 物質の階層変化および状態変化に伴う普遍的物理 Domestic conference

    堀越宗一

    日本物理学会 第75回年次大会  2020.03 

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    Presentation type：Symposium, workshop panel (nominated)  

    Venue：名古屋大学（現地開催中止、発表は成立）  

  • Universal optical response for Feshbach molecules

    Munekazu HORIKOSHI

    International symposium on clustering as a window on the hierarchical structure of quantum systems  2020.01 

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    Presentation type：Symposium, workshop panel (public)  

  • Study of excited cluster states using Feshbach molecules Invited International conference

    Munekazu Horikoshi

    ECT* workshop “Universal physics in Many-Body Quantum Systems – From Atoms to Quarks”  2019.10 

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    Presentation type：Oral presentation (invited, special)  

  • The equation of state for Fermi gases in the unitary regime Invited International conference

    Munekazu Horikoshi

    International Conference on Strongly Correlated Electron Systems 2019 (SCES ' 19)  2019.09 

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    Presentation type：Oral presentation (invited, special)  

  • 冷却原子量子シミュレーションのクラウド利用に向けて Invited Domestic conference

    堀越 宗一

    新学術領域「クラスター階層」「量子ビーム応用」合同検出器ワークショップ  2019.09 

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    Presentation type：Oral presentation (invited, special)  

  • 様々な量子系に化ける原子・分子 Domestic conference

    堀越 宗一

    大阪市立大学理学研究科談話会  2019.06 

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    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

  • Spontaneously Created Attractive Bose-Einstein Condensates and Their Critical Behaviors International conference

    Yiping Chen, Munekazu Horikoshi, Kosuke Yoshioka, Makoto Kuwata-Gonokami

    50th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics APS Meeting  2019.05 

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    Presentation type：Oral presentation (general)  

  • Measurement of bulk viscosity of ultracold Fermi gas in the unitary regime International conference

    Takahiro Tsumori, Munekazu Horikoshi, Keisuke Fujii, Yusuke Nishida, Junji Yumoto, Makoto Kuwata-Gonokami

    50th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics APS Meeting  2019.05 

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    Presentation type：Oral presentation (general)  

  • Cold Atom Experiments for Cold High-Energy Physics Invited International conference

    Munekazu Horikoshi

    HKUST IAS Focused workshop on “Quantum simulation of novel phenomena with ultracold atoms”  2019.05 

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    Presentation type：Oral presentation (invited, special)  

    Venue：Hong Kong  

  • Introduction Domestic conference

    Munekazu Horikoshi

    2019.03 

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    Presentation type：Oral presentation (invited, special)  

  • Cold atom experiment for exploring universal quantum many-body physics Invited International conference

    Munekazu Horikoshi

    The 50th Reimei Workshop "Universal Physics in Many-Body Quantum Systems : From Atoms to Quarks"  2018.12  Advanced Science Research Center, Japan Atomic Energy Agency (JAEA)

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    Presentation type：Oral presentation (invited, special)  

    Venue：Ibaraki Quantum Beam Research Center (IQBRC)  

  • Dilute pure neutron matter investigated by cold atom experiments Invited International conference

    Munekazu Horikoshi

    ECT* workshop, Exploring Nuclear Physics with Ultracold Atoms  2018.06  The European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*)

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    Presentation type：Oral presentation (invited, special)  

    Venue：Trento, Italy  

  • Dilute neutron matter investigated by ultracold atom experiments Invited Domestic conference

    Munekazu Horikoshi

    2018.06 

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    Presentation type：Oral presentation (invited, special)  

  • 冷却原子気体を用いた極低温量子物質の実験的シミュレーョン Invited Domestic conference

    堀越 宗一

    物質階層の原理を探求する統合的実験研究」研究報告会  2018.02  理化学研究所

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    Presentation type：Oral presentation (invited, special)  

    Venue：理化学研究所, 和光市  

  • Universal cluster science investigated by cold atom experiments Invited Domestic conference

    Munekazu Horikoshi

    日本物理学会, 実験核物理領域，理論核物理領域，素粒子実験領域，素粒子論領域，領域1合同シンポジウム：Clustering as a window on the hierarchical structure of quantum system  2017.09 

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    Presentation type：Oral presentation (invited, special)  

  • 極低温原子気体による中性子星核物質の量子シミュレーション Invited Domestic conference

    堀越 宗一

    AMO討論会  2017.06  電気通信大学

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    Presentation type：Symposium, workshop panel (nominated)  

    Venue：電気通信大学  

  • From cold atoms to dilute neutron matter Invited International conference

    Munekazu Horikoshi

    12th Asian International Seminar on Atomic and Molecular Physics  2016.09 

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    Presentation type：Oral presentation (invited, special)  

  • 冷却原子から探るフェルミ多体系の状態方程式 Invited Domestic conference

    堀越 宗一

    理研シンポジウム・iTHES研究会「熱場の量子論とその応用」  2016.08  理化学研究所

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    Presentation type：Oral presentation (invited, special)  

    Venue：理化学研究所, 和光市  

  • Ground-state properties of superfluid fermions from the BCS region to the unitarity limit Invited Domestic conference

    Munekazu Horikoshi

    CEMS Topical Meeting on Cold Atoms  2016.06 

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    Presentation type：Oral presentation (invited, special)  

  • 冷却原子から希薄中性子星物質へ Invited Domestic conference

    堀越 宗一

    新学術３領域(重力波天体・地下素核研究・中性子星核物質)合同シンポジウム「多面的アプローチで解きあかす宇宙と天体」  2015.07  東北大学

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    Presentation type：Oral presentation (invited, special)  

    Venue：東北大学  

  • 冷却原子実験による核物理へのアプローチ Invited Domestic conference

    堀越 宗一

    基研研究会「量子情報の新展開」  2014.03  京都大学

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    Presentation type：Oral presentation (invited, special)  

    Venue：京都大学  

  • 冷却フェルミ原子の実験を通じて中性子物質を探る Invited Domestic conference

    堀越 宗一

    基研研究会「熱場の量子論とその応用」  2012.08  京都大学

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    Presentation type：Oral presentation (invited, special)  

    Venue：京都大学  

  • 冷却原子系を用いた希薄中性子物質の研究 Invited Domestic conference

    Munekazu Horikoshi

    2012.03 

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    Presentation type：Oral presentation (invited, special)  

  • 冷却フェルミ気体における普遍的熱力学関数の決定 Invited Domestic conference

    堀越 宗一

    日本物理学会若手奨励賞受賞記念講演  2012.03  日本物理学会

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    Presentation type：Oral presentation (invited, special)  

    Venue：関西学院大学  

  • Simulation of neutron-rich dilute nuclear matter using ultracold Fermi gases Invited International conference

    Munekazu Horikoshi

    APCTP Focus Program on Quantum Condensation (QC12)  2012  Asia-Pacific Center for Theoretical Physics(APCTP)

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    Presentation type：Oral presentation (invited, special)  

  • Thermodynamics and Hydrodynamics of a unitary Fermi gas”, INT symposium “Fermions from Cold Atoms to Neutron Stars : Benchmarking the Many-Body Problem Invited International conference

    Munekazu Horikoshi

    INT symposium “Fermions from Cold Atoms to Neutron Stars : Benchmarking the Many-Body Problem”  2011.05  University of Washington

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    Presentation type：Oral presentation (invited, special)  

    Venue：Seattle, USA  

  • ユニタリー極限の冷却原子系の実験 Invited Domestic conference

    堀越 宗一

    日本物理学会, 領域8,領域1合同シンポジウム:冷却原子と相関電子系〜二つの世界を結ぶ物理,領域8(強相関系:高温超伝導,強相関f電子系など)  2011.03  日本物理学会

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    Presentation type：Oral presentation (invited, special)  

    Venue：富山大学  

  • Experimental determination of universal thermodynamics at the unitarity limit Invited International conference

    Munekazu Horikoshi, Shuta Nakajima, Masahito Ueda, Takashi Mukaiyama

    LENS-Tokyo workshop  2009  European Laboratory for Non-Linear Spectroscopy

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    Presentation type：Oral presentation (invited, special)  

    Venue：Florence, Italy  

  • Condensate interferometer on an atom chip Invited International conference

    Munekazu Horikoshi

    International Symposium on Coherent Optical Science  2007  The University of Electro-Communications

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    Presentation type：Oral presentation (invited, special)  

    Venue：Tokyo, Japan  

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Grant-in-Aid for Scientific Research

  • FFLO超流動の直接観測と第一原理計算による探索

    Grant-in-Aid for Scientific Research(B)  2026

  • FFLO超流動の直接観測と第一原理計算による探索

    Grant-in-Aid for Scientific Research(B)  2025

  • FFLO超流動の直接観測と第一原理計算による探索

    Grant-in-Aid for Scientific Research(B)  2024

  • FFLO超流動の直接観測と第一原理計算による探索

    2023

Contract research

  • ERATO関口三体核力プロジェクト

    国立研究開発法人 科学技術振興機構  戦略的創造研究推進事業／ERATO（総括実施型）  2023

Charge of on-campus class subject

  • 専門物理学実験A

    2024   Weekly class   Undergraduate

  • 物理学特別研究2A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究1A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習2A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習1A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究3A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習5A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習4A

    2024   Intensive lecture   Graduate school

  • 物理学特別演習3A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究5A

    2024   Intensive lecture   Graduate school

  • 物理学特別研究4A

    2024   Intensive lecture   Graduate school

  • 専門物理学実験

    2023   Weekly class   Undergraduate

  • 物理実験学

    2023   Weekly class   Undergraduate

  • 物性物理学２

    2023   Weekly class   Undergraduate

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Other

  • 主催研究会

    2019.09

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    主題：第1回 冷却原子研究会「アトムの会」
    開催日時：2019年9月18日(水)、19日(木)、20日(金)
    開催地: 熱海
    研究会概要：国内の冷却原子研究をさらに飛躍させるため、 研究者や学生が集い存分に議論し合う研究会「アトムの会」を主催。若手研究者２０名と学生１０名が参加し、実験と理論の研究最前線を議論。

  • 主催シンポジウム

    2019.03

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    日本物理学会一般シンポジウム 領域1，理論核物理領域，実験核物理領域 量子シミュレーションの最前線：極低温粒子系から探る宇宙・ハドロン・物性物理

  • 主催国際研究会

    2014.05

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    主題：“Intersection of cold-atomic and nuclear physics”
    開催日時：2014年5月12,13日
    開催地：APCTP Headquarters, Pohang, Korea
    口頭発表：１８件（招待講演８件）
    研究会概要：アジアで初めて行われる冷却原子と原子核物理の合同研究会を主催。日本、中 国、韓国の研究者を集め、冷却原子から４人、原子核物理から４人の招待講演者を招き、両分野の研究の最前線や共通物理について議論。