Disentanglement of two-qubit system in the Bloch channel

被引：1
|
作者：
Ban, Masashi [1 ]
机构：
[1] Ochanomizu Univ, Grad Sch Human & Sci, Bunkyo Ku, Tokyo 1128610, Japan
来源：
OPTICS COMMUNICATIONS | 2010年 / 283卷 / 19期
关键词：
Entanglement; Decoherence; Relaxation time; QUANTUM INFORMATION; BELL INEQUALITY; SUDDEN-DEATH; ENTANGLEMENT; DECOHERENCE; STATES;
D O I：
10.1016/j.optcom.2010.05.030
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Disentanglement of two qubits is studied in the relaxation process characterized by the longitudinal and transversal relaxation times, T-1 and T-2, which satisfy the inequality T-2 <= 2T(1) due to the complete positivity of the time-evolution. In the case of sufficiently low temperature, it is shown that whether the equality T-2 = 2T(1) is satisfied or not is of essential importance in the finite-time disentanglement. This is the characteristic feature of entanglement. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：3812 / 3817
页数：6
相关论文
共 50 条
  • [1] Disentanglement and inseparability correlation in a two-qubit system
    Zhou, ZW
    Guo, GC
    PHYSICAL REVIEW A, 2000, 61 (03): : 8 - 321088
  • [2] Decay of two-qubit correlations in the squeezed Bloch channel
    Ban, Masashi
    JOURNAL OF MODERN OPTICS, 2012, 59 (09) : 823 - 829
  • [3] Disentanglement in a two-qubit system subjected to dissipation environments
    Ikram, Manzoor
    Li, Fu-li
    Zubairy, M. Suhail
    PHYSICAL REVIEW A, 2007, 75 (06):
  • [4] Geometry of Bloch vectors in two-qubit system
    Jakóbczyk, L
    Siennicki, M
    PHYSICS LETTERS A, 2001, 286 (06) : 383 - 390
  • [5] Two-Qubit Bloch Sphere
    Wie, Chu-Ryang
    PHYSICS, 2020, 2 (03): : 383 - 396
  • [6] Non-Markovian disentanglement dynamics of a two-qubit system
    Cao, Xiufeng
    Zheng, Hang
    PHYSICAL REVIEW A, 2008, 77 (02):
  • [7] Disentanglement in a two-qubit system subjected to dissipative environment: Exact analysis
    Qurban, Misbah
    Tahira, Rabia
    Ul-Islam, Rameez
    Ikram, Manzoor
    OPTICS COMMUNICATIONS, 2016, 366 : 285 - 290
  • [8] Initial decoherence and disentanglement of open two-qubit systems
    Liang, XT
    PHYSICS LETTERS A, 2006, 349 (1-4) : 98 - 103
  • [9] Non-Markovian disentanglement dynamics of two-qubit system in common environment
    Cao, X. -F.
    Zheng, H.
    EUROPEAN PHYSICAL JOURNAL B, 2009, 68 (02): : 209 - 219
  • [10] Non-Markovian disentanglement dynamics of two-qubit system in common environment
    X.-F. Cao
    H. Zheng
    The European Physical Journal B, 2009, 68 : 209 - 219
12345