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2023 年度 実施状況報告書

Using symmetry to enhance quantum batteries and heat engines

研究課題

研究課題/領域番号 23K03290
研究機関沖縄科学技術大学院大学

研究代表者

FOGARTY Thomas  沖縄科学技術大学院大学, 量子システム研究ユニット, スタッフサイエンティスト (60786987)

研究期間 (年度) 2023-04-01 – 2026-03-31
キーワードquantum heat engines / quantum batteries / symmetry / quantum control / quantum correlations / interacting gases / thermodynamics / cold atoms
研究実績の概要

The topic of this research plan is the effect of particle exchange symmetry on the performance of quantum heat engines and quantum batteries. In this past year 5 papers have been published on this project, 2 in Physical Review Research, 2 in Scipost Physics and 1 in Nature.

I highlight 2 of these important works. The first in PRR on developing a variational quantum algorithm to calculate the energy extraction from a quantum battery showed the effect of correlations on this process. It was also the first of its kind to be developed and run on a quantum computer. The second paper in Nature was on the BEC-BCS crossover quantum engine, in which the change of statistics between fermions and bosons allowed to extract work from a purely quantum effect. This was confirmed by the experiment from the Kaiserslautern group who were my collaborators on this project.

現在までの達成度 (区分)
現在までの達成度 (区分)

1: 当初の計画以上に進展している

理由

The first 2 major works of this project have been completed: quantum algorithm for quantum batteries, and the BEC-BCS quantum engine experiment. In the following year I will work on followup works to the quantum battery and quantum heat engine projects. Firstly, one of the main goals of this project: the role of statistics in a quantum battery, particularly the role of symmetrization in work extraction. Most of the data has been collected and the paper is now being written. Secondly, a theory paper looking into the details of statistics enhanced quantum heat engines, focussing on modeling the 1D Lieb-Liniger model and using interactions to control statistics during an engine cycle. The paper is close to being completed.

今後の研究の推進方策

After finishing the next two papers outlined above, I plan to start two more followup projects. One is focussing on a p-wave interacting quantum battery and its thermodynamics. Here s-wave interacting bosons can be mapped to p-wave interacting fermions, allowing to quickly get results for single component systems, including quench spectral functions. This will eventually be extended to 2-component systems with mixtures of s-wave and p-wave interactions. The second project will be a focus on heat flow in distinguishable Bose-Bose and Bose-Fermi mixtures. For this I am developing code to describe few-body systems and their heat flow from one system to the other. Statistics will play a role depending on the symmetry of the initial state and their correlations.

次年度使用額が生じた理由

Grant money will be used to go for 2 invited talks on quantum statistics engines to ICTP in Trieste Italy. Further funds will be used to travel to ICAP conference in London, followed by a research visit to collaborators in Ireland.

  • 研究成果

    (6件)

すべて 2024 2023

すべて 雑誌論文 (5件) (うち国際共著 5件、 査読あり 5件、 オープンアクセス 5件) 学会発表 (1件)

  • [雑誌論文] High fidelity control of a many-body Tonks-Girardeau gas with an effective mean-field approach2024

    • 著者名/発表者名
      Hasan Muhammad S.、Fogarty T.、Li J.、Ruschhaupt A.、Busch Th.
    • 雑誌名

      Physical Review Research

      巻: 6 ページ: 023114

    • DOI

      10.1103/PhysRevResearch.6.023114

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Variational quantum algorithm for ergotropy estimation in quantum many-body batteries2024

    • 著者名/発表者名
      Hoang Duc Tuan、Metz Friederike、Thomasen Andreas、Anh-Tai Tran Duong、Busch Thomas、Fogarty Thomas
    • 雑誌名

      Physical Review Research

      巻: 6 ページ: 013038

    • DOI

      10.1103/PhysRevResearch.6.013038

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] A quantum engine in the BEC-BCS crossover2023

    • 著者名/発表者名
      Koch Jennifer、Menon Keerthy、Cuestas Eloisa、Barbosa Sian、Lutz Eric、Fogarty Thomas、Busch Thomas、Widera Artur
    • 雑誌名

      Nature

      巻: 621 ページ: 723~727

    • DOI

      10.1038/s41586-023-06469-8

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Fermionization of a few-body Bose system immersed into a Bose-Einstein condensate2023

    • 著者名/発表者名
      Keller Tim、Fogarty Thomas、Busch Thomas
    • 雑誌名

      SciPost Physics

      巻: 15 ページ: 095

    • DOI

      10.21468/SciPostPhys.15.3.095

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Quantum chaos in interacting Bose-Bose mixtures2023

    • 著者名/発表者名
      Duong Anh-Tai Tran、Mikkelsen Mathias、Busch Thomas、Fogarty Thomas
    • 雑誌名

      SciPost Physics

      巻: 15 ページ: 048

    • DOI

      10.21468/SciPostPhys.15.2.048

    • 査読あり / オープンアクセス / 国際共著
  • [学会発表] Enhancing many-body quantum batteries through symmetrization2023

    • 著者名/発表者名
      Thomas Fogarty
    • 学会等名
      Qunatum thermodynamics down under

URL: 

公開日: 2024-12-25  

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