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2020 Fiscal Year Annual Research Report

Exploiting quantum phase transitions to improve the efficiency of quantum thermodynamic processes

Research Project

Project/Area Number 18K13507
Research InstitutionOkinawa Institute of Science and Technology Graduate University

Principal Investigator

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, 研究員 (60786987)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsquantum heat engine / thermodynamics / speed limits
Outline of Annual Research Achievements

In the last financial year I have published 4 papers related to my KAKENHI grant. At the forefront I published an article in the journal Quantum Science and Technology entitled "A many-body heat engine at criticality". This work answered the main question of my KAKENHI grant, showing that many-body effects at a quantum critical point can improve the performance of quantum heat engines.
Related to this area of many-body quantum thermodynamics and control I also published a paper in Physical Review Letters on minimally destructive thermometry of a Fermi gas, and published a paper in Physical Review Research on the effects of many-body coherence on quantum speed limits.
In Physical Review Research I published an article exploring interaction driven heat engines in the Thomas-Fermi regime.

  • Research Products

    (5 results)

All 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Effects of coherence on quantum speed limits and shortcuts to adiabaticity in many-particle systems2020

    • Author(s)
      Xu Tian-Niu、Li Jing、Busch Thomas、Chen Xi、Fogarty Thomas
    • Journal Title

      Physical Review Research

      Volume: 2 Pages: 023125

    • DOI

      10.1103/PhysRevResearch.2.023125

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Feshbach engine in the Thomas-Fermi regime2020

    • Author(s)
      Keller Tim、Fogarty Thomas、Li Jing、Busch Thomas
    • Journal Title

      Physical Review Research

      Volume: 2 Pages: 033335

    • DOI

      10.1103/PhysRevResearch.2.033335

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In-Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities2020

    • Author(s)
      Mitchison Mark T.、Fogarty Thomas、Guarnieri Giacomo、Campbell Steve、Busch Thomas、Goold John
    • Journal Title

      Physical Review Letters

      Volume: 125 Pages: 080402

    • DOI

      10.1103/PhysRevLett.125.080402

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A many-body heat engine at criticality2020

    • Author(s)
      Fogarty Thomas、Busch Thomas
    • Journal Title

      Quantum Science and Technology

      Volume: 6 Pages: 015003~015003

    • DOI

      10.1088/2058-9565/abbc63

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] In situ thermometry of a cold Fermi gas via dephasing impurities2021

    • Author(s)
      Thomas Fogarty
    • Organizer
      JPS March Meeting
    • Int'l Joint Research

URL: 

Published: 2021-12-27  

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