Chiral quantum heating and cooling with an optically controlled ion

Jin-Tao Bu; Jian-Qi Zhang; Ge-Yi Ding; Jia-Chong Li; Jia-Wei Zhang; Bin Wang; Wen-Qiang Ding; Wen-Fei Yuan; Liang Chen; Qi Zhong; Ali Keçebaş; Şahin K. Özdemir; Fei Zhou; Hui Jing; Mang Feng

doi:10.1038/s41377-024-01483-5

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Chiral quantum heating and cooling with an optically controlled ion

Original Articles

- Chiral quantum heating and cooling with an optically controlled ion
- Light: Science & Applications Vol. 13, Issue 7, Pages: 1393-1400(2024)
- Affiliations：
  
  1.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy of Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071 Wuhan, China
  2.University of the Chinese Academy of Sciences, 100049 Beijing, China
  3.Research Center for Quantum Precision Measurement, Guangzhou Institute of Industry Technology, 511458 Guangzhou, China
  4.Department of Engineering Science and Mechanics, and Materials Research Institute, Pennsylvania State University, University Park, State College, PA 16802, USA
  5.Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, 410081 Changsha, China
  6.Department of Physics, Zhejiang Normal University, 321004 Jinhua, China
- Author bio：
  
  Şahin K. Özdemir (sko9@psu.edu)
  Fei Zhou (zhoufei@wipm.ac.cn)
  Hui Jing (jinghui73@foxmail.com)
  Mang Feng (mangfeng@wipm.ac.cn)
- Funds：
- DOI：10.1038/s41377-024-01483-5
  CLC：
- Received：27 September 2023，
  
  Revised：18 April 2024，
  
  Accepted：2024-05-14，
  
  Published Online：26 June 2024，
  
  Published：31 July 2024
- Accepted：
Scan QR Code
Bu, J. T. et al. Chiral quantum heating and cooling with an optically controlled ion.,Light: Science & Applications, 13, 1393-1400 (2024).
DOI：

Bu, J. T. et al. Chiral quantum heating and cooling with an optically controlled ion.,Light: Science & Applications, 13, 1393-1400 (2024). DOI： 10.1038/s41377-024-01483-5.

摘要

Abstract

Quantum heat engines and refrigerators are open quantum systems

whose dynamics can be well understood using a non-Hermitian formalism. A prominent feature of non-Hermiticity is the existence of exceptional points (EPs)

which has no counterpart in closed quantum systems. It has been shown in classical systems that dynamical encirclement in the vicinity of an EP

whether the loop includes the EP or not

could lead to chiral mode conversion. Here

we show that this is valid also for quantum systems when dynamical encircling is performed in the vicinity of their Liouvillian EPs (LEPs)

which include the effects of quantum jumps and associated noise—an important quantum feature not present in previous works. We demonstrate

using a Paul-trapped ultracold ion

the first chiral quantum heating and refrigeration by dynamically encircling a closed loop in the vicinity of an LEP. We witness the cycling direction to be associated with the chirality and heat release (absorption) of the quantum heat engine (quantum refrigerator). Our experiments have revealed that not only the adiabaticity breakdown but also the Landau–Zener–Stückelberg process play an essential role during dynamic encircling

resulting in chiral thermodynamic cycles. Our observations contribute to further understanding of chiral and topological features in non-Hermitian systems and pave a way to exploring the relation between chirality and quantum thermodynamics.

关键词

Keywords

references

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