中国物理B ›› 2018, Vol. 27 ›› Issue (4): 40302-040302.doi: 10.1088/1674-1056/27/4/040302

• GENERAL • 上一篇    下一篇

Comparative investigation of freezing phenomena for quantum coherence and correlations

Lian-Wu Yang(杨连武), Wei Han(韩伟), Yun-Jie Xia(夏云杰)   

  1. 1. Shandong Provincial Key Laboratory of Computation Theory Physics, Department of Physics and Information Engineering, Jining University, Qufu 273155, China;
    2. Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China
  • 收稿日期:2017-11-15 修回日期:2018-01-15 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: Lian-Wu Yang E-mail:wlyanglw@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61675115 and 11304179).

Comparative investigation of freezing phenomena for quantum coherence and correlations

Lian-Wu Yang(杨连武)1, Wei Han(韩伟)2, Yun-Jie Xia(夏云杰)2   

  1. 1. Shandong Provincial Key Laboratory of Computation Theory Physics, Department of Physics and Information Engineering, Jining University, Qufu 273155, China;
    2. Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, China
  • Received:2017-11-15 Revised:2018-01-15 Online:2018-04-05 Published:2018-04-05
  • Contact: Lian-Wu Yang E-mail:wlyanglw@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61675115 and 11304179).

摘要: We show that the freezing phenomenon, exhibited by a specific class of two-qubit state under local nondissipative decoherent evolutions, is a common feature of the relative entropy measure of quantum coherence and correlation. All those measurement outcomes, preserve a constant value in the considered noisy channels, but the condition, property and mechanism of the freezing phenomenon for quantum coherence are different from those of the quantum correlation.

关键词: freezing phenomenon, quantum coherence, quantum discord

Abstract: We show that the freezing phenomenon, exhibited by a specific class of two-qubit state under local nondissipative decoherent evolutions, is a common feature of the relative entropy measure of quantum coherence and correlation. All those measurement outcomes, preserve a constant value in the considered noisy channels, but the condition, property and mechanism of the freezing phenomenon for quantum coherence are different from those of the quantum correlation.

Key words: freezing phenomenon, quantum coherence, quantum discord

中图分类号:  (Foundations of quantum mechanics; measurement theory)

  • 03.65.Ta
03.65.Yz (Decoherence; open systems; quantum statistical methods) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)