中国物理B ›› 2020, Vol. 29 ›› Issue (1): 10301-010301.doi: 10.1088/1674-1056/ab5930

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

Coherence measures based on sandwiched Rényi relative entropy

Jianwei Xu(胥建卫)   

  1. College of Science, Northwest A&F University, Yangling 712100, China
  • 收稿日期:2019-07-19 修回日期:2019-11-20 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: Jianwei Xu E-mail:xxujianwei@nwafu.edu.cn
  • 基金资助:
    Project supported by the China Scholarship Council (Grant No. 201806305050).

Coherence measures based on sandwiched Rényi relative entropy

Jianwei Xu(胥建卫)   

  1. College of Science, Northwest A&F University, Yangling 712100, China
  • Received:2019-07-19 Revised:2019-11-20 Online:2020-01-05 Published:2020-01-05
  • Contact: Jianwei Xu E-mail:xxujianwei@nwafu.edu.cn
  • Supported by:
    Project supported by the China Scholarship Council (Grant No. 201806305050).

摘要: Coherence is a fundamental ingredient for quantum physics and a key resource for quantum information theory. Baumgratz, Cramer and Plenio established a rigorous framework (BCP framework) for quantifying coherence[Baumgratz T, Cramer M and Plenio M B Phys. Rev. Lett. 113 140401 (2014)]. In the present paper, under the BCP framework we provide two classes of coherence measures based on the sandwiched Rényi relative entropy. We also prove that we cannot get a new coherence measure f(C(·)) by a function f acting on a given coherence measure C.

关键词: quantum coherence, coherence measure, sandwiched Rényi relative entropy

Abstract: Coherence is a fundamental ingredient for quantum physics and a key resource for quantum information theory. Baumgratz, Cramer and Plenio established a rigorous framework (BCP framework) for quantifying coherence[Baumgratz T, Cramer M and Plenio M B Phys. Rev. Lett. 113 140401 (2014)]. In the present paper, under the BCP framework we provide two classes of coherence measures based on the sandwiched Rényi relative entropy. We also prove that we cannot get a new coherence measure f(C(·)) by a function f acting on a given coherence measure C.

Key words: quantum coherence, coherence measure, sandwiched Rényi relative entropy

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.65.Aa (Quantum systems with finite Hilbert space)