KOSAKA Hideo

Affiliation

Faculty of Engineering, Division of Intelligent Systems Engineering

Job Title

Professor

Research Fields, Keywords

quantum information physics



ORCID  https://orcid.org/0000-0002-3778-7236

Graduating School 【 display / non-display

  • 1983.04
    -
    1987.03

    Kyoto University   Faculty of Science   Graduated

Graduate School 【 display / non-display

  •  
    -
    1999.09

    Kyoto University  Graduate School, Division of Engineering  Doctor Course  Completed

  • 1987.04
    -
    1989.03

    Kyoto University  Graduate School, Division of Natural Science  Master Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  Kyoto University

Campus Career 【 display / non-display

  • 2014.04
    -
    Now

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Intelligent Systems Engineering   Professor  

  • 2018.04
    -
    Now

    Concurrently   Yokohama National UniversityInstitute of Advanced Sciences   Professor  

  • 2018.04
    -
    Now

    Concurrently   Yokohama National UniversityGraduate school of Engineering Science   Department of Mathematics, Physics, Electrical Engineering and Computer Science   Professor  

  • 2014.04
    -
    Now

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mathematics, Physics, Electrical Engineering and Computer Science   Professor  

  • 2014.04
    -
    Now

    Concurrently   Yokohama National UniversityGraduate School of Engineering   Department o Physics, Electrical and Computer Engineering   Professor  

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Condensed matter physics I

 

Papers 【 display / non-display

  • Geometric entanglement of a photon and spin qubits in diamond

    Y Sekiguchi, Y Yasui, K Tsurumoto, Y Koga, R Reyes, H Kosaka,

    Communications Physics ( nature publishing )    2021  [Refereed]

    Joint Work

  • Geometric Quantum Gates over Spin Qubits in Diamond

    Kosaka Hideo, Nagata Kodai, Kuramitani Kouyou

    Butsuri ( The Physical Society of Japan )  75 ( 11 )   683 - 689   2020

    Joint Work

     View Summary

    <p>The geometric phase, generally discarded as a global phase, allows universal holonomic gating of an ideal logical qubit, which we call a geometric spin qubit, defined in the degenerate subspace of the triplet spin qutrit. We here experimentally demonstrate non-adiabatic and non-abelian holonomic quantum gates over the geometric spin qubit on an electron or nitrogen nucleus. We manipulate purely the geometric phase with a polarized microwave in a nitrogen-vacancy center in diamond under a zero-magnetic field at room temperature. We also demonstrate a two-qubit holonomic gate to show universality by manipulating the electron-nucleus entanglement.</p>

    DOI CiNii

  • Universal holonomic quantum gates over geometric spin qubits with polarised microwaves

    Kodai Nagata,Kouyou Kuramitani,Yuhei Sekiguchi,Hideo Kosaka

    Nature Communications ( SPRINGER NATURE )  9   3227   2018.08  [Refereed]

    Joint Work

    Web of Science DOI PubMed

  • Two-step frequency conversion for connecting distant quantum memories by transmission through an optical fiber

    Shuhei Tamura,Kohei Ikeda,Kotaro Okamura,Kazumichi Yoshii,Feng-Lei Hong,Tomoyuki Horikiri,Hideo Kos … Show more authors

    JAPANESE JOURNAL OF APPLIED PHYSICS ( IOP PUBLISHING LTD )  57 ( 6 )   062801   2018.05  [Refereed]

    Joint Work

    Web of Science DOI

  • Compact frequency-stabilized pump laser for wavelength conversion in long-distance quantum communication

    Kohei Ikeda, Yusuke Hisai, Kazumichi Yoshii, Hideo Kosaka, Feng-Lei Hong, and Tomoyuki Horikiri

    Journal of the Optical Society of America B ( OPTICAL SOC AMER )  35 ( 8 )   2023 - 2028   2018  [Refereed]

    Joint Work

    Web of Science DOI

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Presentations 【 display / non-display

  • Geometric spin qubits in an NV center in diamond for quantum repeaters

    Hideo Kosaka  [Invited]

    Qtech2018(China-Japan international workshop on quantum technologies)  (University of Science and Technology of China)  2018.08.23  

  • Holonomic quantum control of geometric spin qubits in an NV center in diamond

    Hideo Kosaka  [Invited]

    34th International Conference on Physics of Semiconductors  2018.07.29  

  • Holonomic Quantum Control of Geometric Spin Qubits in Diamond

    Hideo Kosaka  [Invited]

    The 19th International Symposium on the Physics of Semiconductors and Applications(ISPSA2018)  2018.07.01  

  • Holonomic Quantum Gates and Quantum Teleportation into Solid

    Hideo Kosaka  [Invited]

    1st Advances in Quantum Engineering International Meeting  (Nanyang Executive Centre, Singapore)  2018.06.25  

  • Holonomic quantum control of hybrid spin qubits in an NV center in diamond

    Hideo Kosaka  [Invited]

    C3QS 2018  2018.04.16  

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Council/Academic activity outside the university 【 display / non-display

  • Japan Applied Physics, New area group "Quantum information research"

    2013.04
     
     

    Society  

Social Contribution(Extension lecture) 【 display / non-display