Connections of Coherent Information, Quantum Discord, and Entanglement

被引：5
作者：
Fu Hui-Juan [1 ]
Li Jun-Gang [1 ]
Zou Jian [1 ]
Shao Bin [1 ]
机构：
[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2012年 / 57卷 / 04期
基金：
美国国家科学基金会;
关键词：
coherent information; quantum discord; entanglement; CONTINUOUS VARIABLE SYSTEMS; SEPARABILITY CRITERION; 2; QUBITS; EVOLUTION; CHANNELS;
D O I：
10.1088/0253-6102/57/4/12
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
For a pure non-markovian dephasing model we derive analytic expressions of coherent information, quantum discord, and entanglement. We find that for the cases of the initial Werner states, the dynamical behavior of coherent information is similar to that of quantum discord but different from that of entanglement. Coherent information, as well as quantum discord, can reveal the quantum correlations in some mixed-states, in which the entanglement is zero.
引用
收藏
页码：589 / 594
页数：6
相关论文
共 50 条
  • [1] Connections of Coherent Information,Quantum Discord,and Entanglement
    付慧娟
    李军刚
    邹健
    邵彬
    Communications in Theoretical Physics, 2012, 57 (04) : 589 - 594
  • [2] Quantum Discord for Information Transmission Using Coherent States
    A. El Allati
    K. Hammam
    H. Amellal
    Y. Hassouni
    Journal of Russian Laser Research, 2018, 39 : 524 - 532
  • [3] QUANTUM DISCORD FOR INFORMATION TRANSMISSION USING COHERENT STATES
    El Allati, A.
    Hammam, K.
    Amellal, H.
    Hassouni, Y.
    JOURNAL OF RUSSIAN LASER RESEARCH, 2018, 39 (05) : 524 - 532
  • [4] Quantum Entanglement and Quantum Discord in Gaussian Open Systems
    Isar, Aurelian
    PHYSICS CONFERENCE (TIM-10), 2011, 1387
  • [5] Quantum Discord in Optical Coherent States
    El Allati, A.
    Robles-Perez, S.
    El Baz, M.
    INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2014, 53 (01) : 52 - 59
  • [6] Collapse-revival of quantum discord and entanglement
    Yan, Xue-Qun
    Zhang, Bo-Ying
    ANNALS OF PHYSICS, 2014, 349 : 350 - 356
  • [7] Quantum entanglement and quantum discord in dimers in multiple quantum NMR experiments
    Gerasev, S. A.
    Kuznetsova, E. I.
    INTERNATIONAL CONFERENCE ON MICRO- AND NANO-ELECTRONICS 2016, 2016, 10224
  • [8] Predominance of entanglement of formation over quantum discord under quantum channels
    Campbell, Steve
    QUANTUM INFORMATION PROCESSING, 2013, 12 (07) : 2623 - 2636
  • [9] Predominance of entanglement of formation over quantum discord under quantum channels
    Steve Campbell
    Quantum Information Processing, 2013, 12 : 2623 - 2636
  • [10] Quantum Discord and Entanglement of Quasi-Werner States Based on Bipartite Entangled Coherent States
    Manoj K. Mishra
    Ajay K. Maurya
    Hari Prakash
    International Journal of Theoretical Physics, 2016, 55 : 2735 - 2745
12345