Seki Kazuhiro 関和弘

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SEKI Kazuhiro 関和弘

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Researcher Number	40708533
Other IDs	https://orcid.org/0000-0002-2765-8297
Affiliation (Current)	2025: 国立研究開発法人理化学研究所, 量子コンピュータ研究センター, 研究員
Affiliation (based on the past Project Information) *help	2021 – 2023: 国立研究開発法人理化学研究所, 量子コンピュータ研究センター, 研究員 2019 – 2020: 国立研究開発法人理化学研究所, 創発物性科学研究センター, 研究員 2017: SISSA, 博士研究員 2016: 理化学研究所, 柚木計算物性物理研究室, 基礎科学特別研究員
Review Section/Research Field	Principal Investigator Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related / 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields Except Principal Investigator Condensed matter physics II
Keywords	Principal Investigator 物性物理学 / 量子計算 / 量子多体問題 / モット絶縁体 / 理論物理学 / 計算物理学 / リング交換相互作用 / block拡張有限温度Lanczos法 / 有限温度物性 / 量子エンタングルメント … More / 電子格子相互作用 / 補助場量子モンテカルロ / 強相関電子系 / 量子多体系 … More Except Principal Investigator 電子・ホール変換 / 長距離クーロン相互作用 / BCS-BECクロスオーバー / 電荷密度波 / 電子・フォノン相互作用 / 電荷秩序 / 分子性結晶 / 幾何学的フラストレーション / フィリング制御モット転移 / 変分モンテカルロ法 / ダイマー内電荷自由度 / 分子性導体 / 超伝導 / エキシトン凝縮 / バンド間相互作用 / 磁気多極子 / 強相関系 / 変分クラスター近似 / 多極子 / コバルト酸化物 / 遷移金属カルコゲナイド / 励起子絶縁体 / 励起子凝縮 / 強相関電子系 / 物性理論 Less

強相関系のための量子計算手法の研究と開発Principal Investigator
- Principal Investigator
  
  関和弘
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
- Research Institution
  Institute of Physical and Chemical Research
Study of pseudogap phenomena in doped Mott insulatorsPrincipal Investigator
- Principal Investigator
  
  Seki Kazuhiro
- Project Period (FY)
  2019 – 2023
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Review Section
  
  0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
- Research Institution
  Institute of Physical and Chemical Research
Microscopic theories on the excitonic Bose condensation and superconductivity in strongly correlated systems
- Principal Investigator
  
  OHTA Yukinori
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Chiba University
Theory for exciton condensation and novel superconductivity induced by interband interaction
- Principal Investigator
  
  Watanabe Hiroshi
- Project Period (FY)
  2014 – 2017
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Condensed matter physics II
- Research Institution
  Waseda University
  Institute of Physical and Chemical Research

All 2023 2022 2021 2020 2016 2015 2014

All Journal Article Presentation

[Journal Article] Monte Carlo study of cuprate superconductors in a four-band d－p model: role of orbital degrees of freedom2023
- Author(s)
  Watanabe Hiroshi, Shirakawa Tomonori, Seki Kazuhiro, Sakakibara Hirofumi, Kotani Takao, Ikeda Hiroaki, Yunoki Seiji
- Journal Title
  
  Journal of Physics: Condensed Matter
  
  Volume: 35 Issue: 19 Pages: 195601-195601
- DOI
  10.1088/1361-648x/acc0bf
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03847, KAKENHI-PROJECT-22K03520, KAKENHI-PROJECT-22K04909, KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-19H01842, KAKENHI-PLANNED-19H05825
[Journal Article] Gutzwiller wave function on a quantum computer using a discrete Hubbard-Stratonovich transformation2022
- Author(s)
  Seki Kazuhiro、Otsuka Yuichi、Yunoki Seiji
- Journal Title
  
  Physical Review B
  
  Volume: 105 Issue: 15 Pages: 1-17
- DOI
  10.1103/physrevb.105.155119
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03475, KAKENHI-PROJECT-21K03395, KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-21H04446
[Journal Article] Spatial, spin, and charge symmetry projections for a Fermi-Hubbard model on a quantum computer2022
- Author(s)
  Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  Physical Review A
  
  Volume: 105 Issue: 3 Pages: 1-34
- DOI
  10.1103/physreva.105.032419
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-21H04446
[Journal Article] Variational counterdiabatic driving of the Hubbard model for ground-state preparation2022
- Author(s)
  Xie Qing、Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  Physical Review B
  
  Volume: 106 Issue: 15 Pages: 155153-155153
- DOI
  10.1103/physrevb.106.155153
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03520, KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-21H04446
[Journal Article] Energy-filtered random-phase states as microcanonical thermal pure quantum states2022
- Author(s)
  Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  Physical Review B
  
  Volume: 106 Issue: 15 Pages: 155111-155111
- DOI
  10.1103/physrevb.106.155111
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03520, KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-21H04446
[Journal Article] Discretized quantum adiabatic process for free fermions and comparison with the imaginary-time evolution2021
- Author(s)
  Shirakawa Tomonori、Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  Physical Review Research
  
  Volume: 3 Issue: 1
- DOI
  10.1103/physrevresearch.3.013004
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Quantum Power Method by a Superposition of Time-Evolved States2021
- Author(s)
  Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  PRX Quantum
  
  Volume: 2 Issue: 1
- DOI
  10.1103/prxquantum.2.010333
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Magnetism and Charge Order in the Honeycomb Lattice2021
- Author(s)
  Costa Natanael C.、Seki Kazuhiro、Sorella Sandro
- Journal Title
  
  Physical Review Letters
  
  Volume: 126 Issue: 10
- DOI
  10.1103/physrevlett.126.107205
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Unified description of cuprate superconductors using four-band d-p model2021
- Author(s)
  Watanabe Hiroshi、Shirakawa Tomonori、Seki Kazuhiro、Sakakibara Hirofumi、Kotani Takao、Ikeda Hiroaki、Yunoki Seiji
- Journal Title
  
  Physical Review Research
  
  Volume: 3 Issue: 3 Pages: 1-12
- DOI
  10.1103/physrevresearch.3.033157
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19H01842, KAKENHI-PROJECT-20K03847, KAKENHI-PROJECT-19K23433, KAKENHI-PLANNED-19H05825
[Journal Article] Phase diagram of the two-dimensional Hubbard-Holstein model2020
- Author(s)
  Costa Natanael C.、Seki Kazuhiro、Yunoki Seiji、Sorella Sandro
- Journal Title
  
  Communications Physics
  
  Volume: 3 Issue: 1
- DOI
  10.1038/s42005-020-0342-2
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Emergence of a thermal equilibrium in a subsystem of a pure ground state by quantum entanglement2020
- Author(s)
  Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  Physical Review Research
  
  Volume: 2 Issue: 4
- DOI
  10.1103/physrevresearch.2.043087
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Symmetry-adapted variational quantum eigensolver2020
- Author(s)
  Seki Kazuhiro、Shirakawa Tomonori、Yunoki Seiji
- Journal Title
  
  Physical Review A
  
  Volume: 101 Issue: 5 Pages: 052340-052340
- DOI
  10.1103/physreva.101.052340
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-18H01183
[Journal Article] Thermodynamic properties of an S= 1/2 ring-exchange model on the triangular lattice2020
- Author(s)
  Kazuhiro Seki, Seiji Yunoki
- Journal Title
  
  Physical Review B
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Thermodynamic properties of an S=12 ring-exchange model on the triangular lattice2020
- Author(s)
  Seki Kazuhiro、Yunoki Seiji
- Journal Title
  
  Physical Review B
  
  Volume: 101 Issue: 23 Pages: 235115-235115
- DOI
  10.1103/physrevb.101.235115
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23433, KAKENHI-PROJECT-18H01183
[Journal Article] Dirac electrons in the square-lattice Hubbard model with a d-wave pairing field: The chiral Heisenberg universality class revisited2020
- Author(s)
  Otsuka Yuichi、Seki Kazuhiro、Sorella Sandro、Yunoki Seiji
- Journal Title
  
  Physical Review B
  
  Volume: 102 Issue: 23
- DOI
  10.1103/physrevb.102.235105
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03475, KAKENHI-PROJECT-19K23433
[Journal Article] Symmetry-adapted variational quantum eigensolver2020
- Author(s)
  Kazuhiro Seki, Tomonori Shirakawa, Seiji Yunoki
- Journal Title
  
  Physical Review A
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K23433
[Journal Article] Three-dimensional electronic structures and the metal-insulator transition in Ruddlesden-Popper iridates2016
- Author(s)
  A. Yamasaki, H. Fujiwara, S. Tachibana, D. Iwasaki, Y. Higashino, C. Yoshimi, K. Nakagawa, Y. Nakatani, K. Yamagami, H. Aratani, O. Kirilmaz, M. Sing, R. Claessen, H. Watanabe, T. Shirakawa, S. Yunoki, A. Naitoh, K. Takase, J. Matsuno, H. Takagi, A. Sekiyama, and Y. Saitoh
- Journal Title
  
  Phys. Rev. B
  
  Volume: 94 Issue: 11 Pages: 1151031-10
- DOI
  10.1103/physrevb.94.115103
- NAID
  120006502109
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24224010, KAKENHI-PROJECT-25287096, KAKENHI-PROJECT-15K05186, KAKENHI-PROJECT-26800198
[Journal Article] Charge-density wave induced by combined electron-electron and electron-phonon interactions in 1T-TiSe2: A variational Monte Carlo study2015
- Author(s)
  Hiroshi Watanabe, Kazuhiro Seki, and Seiji Yunoki
- Journal Title
  
  Physical Review B
  
  Volume: 91 Issue: 20
- DOI
  10.1103/physrevb.91.205135
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800198
[Journal Article] A variational Monte Carlo study of exciton condensation2015
- Author(s)
  Hiroshi Watanabe, Kazuhiro Seki, and Seiji Yunoki
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 592 Pages: 012097-012097
- DOI
  10.1088/1742-6596/592/1/012097
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26800198
[Journal Article] Excitonic Bose-Einstein condensation in Ta2NiSe5 above room temperature2014
- Author(s)
  K. Seki, Y. Wakisaka, T. Kaneko, T. Toriyama, T. Konishi, T. Sudayama, N. L. Saini, M. Arita, H. Namatame, M. Taniguchi, N. Katayama, M. Nohara, H. Takagi, T. Mizokawa, and Y. Ohta
- Journal Title
  
  Physical Review B
  
  Volume: 90 Issue: 15 Pages: 155116-155116
- DOI
  10.1103/physrevb.90.155116
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-13J02070, KAKENHI-PROJECT-13J02767, KAKENHI-PROJECT-24224010, KAKENHI-PROJECT-25400356, KAKENHI-PROJECT-26287082, KAKENHI-PROJECT-26400349
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  Workshop on Quantum Simulation Research
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] Quantum-classical hybrid algorithm for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  Quantum Many-Body Systems In and Out of Equilibrium
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  RIKEN-Quantinuum Joint Symposium, Global Business Hub Tokyo
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] Quantum-classical hybrid algorithm for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  Quantum Many-Body Systems In and Out of Equilibrium
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] ミクロカノニカル集団のための量子古典ハイブリッド計算法2023
- Author(s)
  関和弘
- Organizer
  物性研究のための量子アルゴリズム最前線
- Invited
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  RIKEN-Quantinuum Joint Symposium, Global Business Hub Tokyo
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  Workshop on Quantum Simulation Research
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  Workshop on Quantum Simulation Research, University of Tokyo
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] ミクロカノニカル集団のための量子古典ハイブリッド計算法2023
- Author(s)
  関和弘
- Organizer
  量子物理学・ナノサイエンス第353回セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  YITP workshop, Kyoto University,
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] 「富岳」を用いた変分量子固有値ソルバー法による大規模シミュレーション2023
- Author(s)
  吉岡直樹、伊藤伸泰、関和弘、白川知功、柚木清司
- Organizer
  日本物理学会第７８回年次大会、東北大学
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] ミクロカノニカル集団のための量子古典ハイブリッド計算法2023
- Author(s)
  関和弘
- Organizer
  物性研究のための量子アルゴリズム最前線
- Invited
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] Quantum-classical hybrid method for microcanonical ensembles2023
- Author(s)
  Kazuhiro Seki
- Organizer
  YITP workshop, Kyoto University
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] ミクロカノニカル集団のための量子古典ハイブリッド計算法2023
- Author(s)
  関和弘
- Organizer
  量子物理学・ナノサイエンス第353回セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] Quantum-classical hybrid method for microcanonical ensembles, Workshop on Quantum Simulation Research2023
- Author(s)
  Kazuhiro Seki
- Organizer
  Workshop on Quantum Simulation Research, University of Tokyo,
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] 「富岳」を用いた変分量子固有値ソルバー法による大規模シミュレーション2023
- Author(s)
  吉岡直樹、伊藤伸泰、関和弘、白川知功、柚木清司
- Organizer
  日本物理学会第７８回年次大会
- Data Source
  KAKENHI-PROJECT-22K03520
[Presentation] Symmetry-adapted variational quantum eigensolver2020
- Author(s)
  関和弘
- Organizer
  分野横断ワークショップ「量子コンピュータ研究開発の現在とこれから ―量子ビットからソフトウェア・アプリケーションまで―」
- Data Source
  KAKENHI-PROJECT-19K23433
[Presentation] Excitonic condensation and superconductivity in Ta2NiSe52015
- Author(s)
  Y. Ohta, T. Kaneko, K. Seki, T. Toriyama, T. Konishi
- Organizer
  ICM2015
- Place of Presentation
  Barcelona, Spain
- Year and Date
  2015-07-05
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26400349

1. OHTA Yukinori (70168954)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
2. YAMADA Atsushi (10251399)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. KONISHI Takehisa (40302525)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
4. KANEKO Tatsuya (30784433)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
5. SUGIMOTO Koudai (70756072)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. Watanabe Hiroshi (50571238)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
7. SEO Hitoshi (30415054)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. Yunoki Seiji (70532141)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
9. NISHIMOTO Satoshi

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. EJIMA Satoshi

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. FEHSKE Holger

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. MATSUNO Jobu

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
13. 高木英典

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
14. 大塚雄一

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results
15. 池田浩章

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Seki Kazuhiro 関 和弘

SEKI Kazuhiro 関 和弘

Research Projects

Research Products

Co-Researchers

強相関系のための量子計算手法の研究と開発Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study of pseudogap phenomena in doped Mott insulatorsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Microscopic theories on the excitonic Bose condensation and superconductivity in strongly correlated systems

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Theory for exciton condensation and novel superconductivity induced by interband interaction

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Monte Carlo study of cuprate superconductors in a four-band d－p model: role of orbital degrees of freedom2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Gutzwiller wave function on a quantum computer using a discrete Hubbard-Stratonovich transformation2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Spatial, spin, and charge symmetry projections for a Fermi-Hubbard model on a quantum computer2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Variational counterdiabatic driving of the Hubbard model for ground-state preparation2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Energy-filtered random-phase states as microcanonical thermal pure quantum states2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Discretized quantum adiabatic process for free fermions and comparison with the imaginary-time evolution2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Quantum Power Method by a Superposition of Time-Evolved States2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Magnetism and Charge Order in the Honeycomb Lattice2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Unified description of cuprate superconductors using four-band d-p model2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Phase diagram of the two-dimensional Hubbard-Holstein model2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Emergence of a thermal equilibrium in a subsystem of a pure ground state by quantum entanglement2020

Seki Kazuhiro 関和弘

SEKI Kazuhiro 関和弘