共同研究・競争的資金等の研究課題

2019年4月 - 2023年3月

ハイブリッド量子系における非線形現象

日本学術振興会  科学研究費助成事業 基盤研究(A)  基盤研究(A)

課題番号
19H00662
体系的課題番号
JP19H00662
担当区分
研究分担者
配分額
(総額)
45,110,000円
(直接経費)
34,700,000円
(間接経費)
10,410,000円

Beginning the second year of the project our simulation code was implemented on a 200 nodes cluster with 3 TB RAM. This allowed larger scale simulation over longer time scales. Enhanced simulations of the dynamics of a double domain nuclear spin ensemble coupled to the Nambu-Goldstone boson were undertaken with realistic parameters. The simulation reproduced the experimental observed data. Our work opens up the possibility for the exploration of novel collective behavior in solid state systems where the natural energies associated with those spins are much less than the thermal energy (published in PRB Letters).
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Next, we explored a quantum battery protocol using super radiance and absorption. This protocol using dark states to achieve both super extensive capacity and power density, with spins coupled to a reservoir. Quantum correlations are essential for this to be achieved. Further, the power density scales with the number of spins N in the battery. While connected to the charger, the charged state of the battery is a steady state, stabilized through quantum interference in the open system (published in Phys. Rev. Applied).
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We also continued our exploration of HQS for quantum simulation. We used our simulator to explore discrete time crystals, a novel state of matter, emerging in periodically driven quantum systems (ensembles of qubits). We found that a small amount of disorder results in network evolution that exhibits an emergent preferential attachment mechanism related to the existence of scale-free networks. This work was published in Science Advances.

リンク情報
KAKEN
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19H00662
ID情報
  • 課題番号 : 19H00662
  • 体系的課題番号 : JP19H00662

この研究課題の成果一覧

論文

  10

書籍等出版物

  1

講演・口頭発表等

  16
  • Kae Nemoto
    International Advanced Research Workshop “Pursuing Quantum Sensing for Reliable Roadmaps”, ENEA - Frascati Research Centre, Rome, Italy (ENEA - Italian Agency for New Technologies, Energy and Sustainable Economic Development(In the framework of the NATO Science for Peace and Security)) 2023年12月5日  招待有り
  • Kae Nemoto
    The Feedback in Quantum Machines 2023 (FQM2023) (workshop, organisers: Jason Twamley and Bill Munro at OIST) (OIST, Okinawa, 2023/11/27~12/1) 2023年11月27日  招待有り
  • Kae Nemoto
    Seminar in Sorbonne University 2023年10月3日  招待有り
  • Josephine Dias, Christopher W. Wächtler, Victor M, Bastidas, Kae Nemoto, William J. Munro
    51st RQC Seminar (RIKEN Center for Quantum Computing), 2023/6/4-2023/6/10, Riken, Saitama 2023年6月5日  招待有り
  • Josephine Dias, Christopher W. Wächtler, Victor M, Bastidas, Kae Nemoto, William J. Munro
    Quantum Materials Seminar, University of California Berkeley 2023年3月14日
  • William J. Munro, Ming Gong, He-Liang, Shiyu Wang, Chu Guo, Shaowei Li, Yulin Wu, Qingling Zhu, Youwei Zhao, Shaojun Guo, Haoran Qian, Yangsen Ye, Chen Zha, Fusheng Chen, Chong Ying, Jiale Yu, Daojin Fan, Akitada Sakurai, Kae Nemoto, Yong-Heng Huo, Chao-Yang Lu, Cheng-Zhi Peng, Xiaobo Zhu, Jian-Wei Pan
    APS March Meeting 2023 Las Vegas, Nevada, US (Presentation ID: T64.00011) 2023年3月9日
  • Josephine Dias, Christopher W. Wächtler, Victor M. Bastidas, Kae Nemoto, William J. Munro
    APS March Meeting 2023, Las Vegas, Nevada (Presentation ID: N67.00001) 2023年3月8日
  • W. J. Munro, M. Gong, S. Wang, C. Zha, M.-C. Chen, H.-L. Huang, Y. Wu, Q. Zhu, Y. Zhao, S. Li, S. Guo, H. Qian, Y. Ye, F. Chen, C. Ying, J. Yu, D. Fan, D. Wu, H. Su, H. Deng, H. Rong, K. Zhang, S. Cao, J. Lin, Y. Xu, L. Sun, C. Guo, N. Li, F. Liang, V. M, Bastidas, Kae Nemoto, Y.-H. Huo, C.-Y. Lu, C.-Z. Peng, X. Zhu, J.-W. Pan
    Quantum 2.0 2022 Boston, MA United States 2022年6月13日
  • W. J. Munro, M. Gong, S. Wang, C. Zha, M.-C. Chen, H.-L. Huang, Y. Wu, Q. Zhu, Y. Zhao, S. Li, S. Guo, H. Qian, Y. Ye, F. Chen, C. Ying, J. Yu, D. Fan, D. Wu, H. Su, H. Deng, H. Rong, K. Zhang, S. Cao, J. Lin, Y. Xu, L. Sun, C. Guo, N. Li, F. Liang, V. M. Bastidas, Kae Nemoto, Y.-H. Huo, C.-Y. Lu, C.-Z. Peng, X. Zhu, J.-W. Pan
    CLEO: QELS_Fundamental Science 2022 2022年5月20日  招待有り
  • Victor Bastidas, Marta Estarellas, Kae Nemoto, William J. Munro
    Photonics West on Demand, San Francisco, USA 2022年2月21日