中国物理B ›› 2020, Vol. 29 ›› Issue (5): 50302-050302.doi: 10.1088/1674-1056/ab7dab

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Margolus-Levitin speed limit across quantum to classical regimes based on trace distance

Shao-Xiong Wu(武少雄), Chang-Shui Yu(于长水)   

  1. 1 School of Science, North University of China, Taiyuan 030051, China;
    2 School of Physics, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2020-02-12 修回日期:2020-03-01 出版日期:2020-05-05 发布日期:2020-05-05
  • 通讯作者: Shao-Xiong Wu, Chang-Shui Yu E-mail:sxwu@nuc.edu.cn;ycs@dlut.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11775040), the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province of China (Grant No. 2019L0527), and the Fundamental Research Fund for the Central Universities of China (Grant No. DUT18LK45).

Margolus-Levitin speed limit across quantum to classical regimes based on trace distance

Shao-Xiong Wu(武少雄)1, Chang-Shui Yu(于长水)2   

  1. 1 School of Science, North University of China, Taiyuan 030051, China;
    2 School of Physics, Dalian University of Technology, Dalian 116024, China
  • Received:2020-02-12 Revised:2020-03-01 Online:2020-05-05 Published:2020-05-05
  • Contact: Shao-Xiong Wu, Chang-Shui Yu E-mail:sxwu@nuc.edu.cn;ycs@dlut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11775040), the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province of China (Grant No. 2019L0527), and the Fundamental Research Fund for the Central Universities of China (Grant No. DUT18LK45).

摘要: The classical version of Mandelstam-Tamm speed limit based on the Wigner function in phase space was reported by Shanahan et al. [Phys. Rev. Lett. 120 070401 (2018)]. We present the Margolus-Levitin speed limit across the quantum-to-classical transition in phase space based on the trace distance. The Margolus-Levitin speed limit is set by the Schatten L1 norm of the generator of time-dependent evolution for both the quantum and classical domains. As an example, the time-dependent harmonic oscillator is considered to illustrate the result.

关键词: quantum speed limit, Wigner function, phase space, Margolus-Levitin bound

Abstract: The classical version of Mandelstam-Tamm speed limit based on the Wigner function in phase space was reported by Shanahan et al. [Phys. Rev. Lett. 120 070401 (2018)]. We present the Margolus-Levitin speed limit across the quantum-to-classical transition in phase space based on the trace distance. The Margolus-Levitin speed limit is set by the Schatten L1 norm of the generator of time-dependent evolution for both the quantum and classical domains. As an example, the time-dependent harmonic oscillator is considered to illustrate the result.

Key words: quantum speed limit, Wigner function, phase space, Margolus-Levitin bound

中图分类号:  (Quantum mechanics)

  • 03.65.-w
03.65.Db (Functional analytical methods) 03.67.-a (Quantum information)