Thermal Entanglement of a Three-Qubit Heisenberg Chain with a Nonuniform Magnetic Field

被引：0
|
作者：
YANG Guo-Hui ZHOU Ling School of Physics and Optoelectronic Technology
机构：
来源：
Communications in Theoretical Physics | 2008年 / 49卷 / 06期
关键词：
Heisenberg model; entanglement; nonuniform magnetic field;
D O I：
暂无
中图分类号：
O413.1 [量子力学（波动力学、矩阵力学）];
学科分类号：
070205 ; 0809 ;
摘要：
The thermal entanglement of a three-qubit Heisenberg chain under a nonuniform magnetic field is studied.It is very interesting to note that the next nearest neighbor entanglement (NNNE) could be larger than the nearestneighbor entanglement (NNE).We analyze the ground state entanglement,and give the conditions that NNNE is largerthan NNE near zero temperature.Our results also show that the nonuniform field could induce the entanglement andimprove the threshold temperature at certain parameter region.
引用
收藏
页码：1635 / 1638
页数：4
相关论文
共 50 条
  • [1] Thermal entanglement of a three-qubit Heisenberg chain with a nonuniform magnetic field
    Yang Guo-Hui
    Zhou Ling
    [J]. COMMUNICATIONS IN THEORETICAL PHYSICS, 2008, 49 (06) : 1635 - 1638
  • [2] Pairwise entanglement of a three-qubit Heisenberg XY chain in a nonuniform magnetic field with intrinsic decoherence
    Guo, Jin-Liang
    Song, He-Shan
    [J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2009, 388 (11) : 2254 - 2261
  • [3] Thermal entanglement in the two-qubit and three-qubit Heisenberg XX chain
    Oezcan, Oe.
    [J]. SIX INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION, 2007, 899 : 720 - 720
  • [4] Entanglement in the three-qubit Heisenberg model with next nearest neighbor interaction and a nonuniform magnetic field
    R. Liu
    M.-L. Liang
    B. Yuan
    [J]. The European Physical Journal D, 2007, 41 : 571 - 578
  • [5] Entanglement in the three-qubit Heisenberg model with next nearest neighbor interaction and a nonuniform magnetic field
    Liu, R.
    Liang, M. -L.
    Yuan, B.
    [J]. EUROPEAN PHYSICAL JOURNAL D, 2007, 41 (03): : 571 - 578
  • [6] Thermal entanglement in three-qubit Heisenberg models
    Wang, XG
    Fu, HC
    Solomon, AI
    [J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2001, 34 (50): : 11307 - 11320
  • [7] Pairwise thermal entanglement in a three-qubit Heisenberg XX model with a nonuniform magnetic field and Dzyaloshinski-Moriya interaction
    任金忠
    邵晓强
    张寿
    Yeon Kyu-Hwang
    [J]. Chinese Physics B, 2010, 19 (10) : 78 - 84
  • [8] Pairwise thermal entanglement in a three-qubit Heisenberg XX model with a nonuniform magnetic field and Dzyaloshinski-Moriya interaction
    Ren Jin-Zhong
    Shao Xiao-Qiang
    Zhang Shou
    Kyu-Hwang, Yeon
    [J]. CHINESE PHYSICS B, 2010, 19 (10)
  • [9] Impurity entanglement in three-qubit Heisenberg XX chain
    Xi, XQ
    Hao, SR
    Chen, WX
    Yue, RH
    [J]. PHYSICS LETTERS A, 2002, 297 (5-6) : 291 - 299
  • [10] Magnetic impurity effects on the entanglement of three-qubit Heisenberg XY chain with intrinsic decoherence
    Li, SB
    Xu, JB
    [J]. PHYSICS LETTERS A, 2005, 334 (2-3) : 109 - 116
12345