Thermal entanglement in the anisotropic Heisenberg XXZ model with the Dzyaloshinskii-Moriya interaction

被引：69
作者：
Li, Da-Chuang [1 ]
Wang, Xian-Ping [1 ]
Cao, Zhuo-Liang [1 ,2 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Minist Educ, Key Lab Optoelect Informat Acquisit & Manipulat, Hefei 230039, Peoples R China
[2] Hefei Teachers Coll, Dept Phys, Hefei 230061, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 32期
关键词：
D O I：
10.1088/0953-8984/20/32/325229
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The thermal entanglement is investigated in a two-qubit Heisenberg XXZ system with Dzyaloshinskii-Moriya (DM) interaction. It is shown that the entanglement can be efficiently controlled by the DM interaction parameter and coupling coefficient J(z). D(x) (the x-component parameter of the DM interaction) has a more remarkable influence on the entanglement and the critical temperature than D(z) (the z-component parameter of the DM interaction). Thus, by changing the DM interaction direction, we can get a more efficient control parameter to increase the entanglement and the critical temperature.
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页数：5
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共 29 条
[1]   Thermal entanglement of spins in an inhomogeneous magnetic field [J].
Asoudeh, M ;
Karimipour, V .
PHYSICAL REVIEW A, 2005, 71 (02)
[2]   COMMUNICATION VIA ONE-PARTICLE AND 2-PARTICLE OPERATORS ON EINSTEIN-PODOLSKY-ROSEN STATES [J].
BENNETT, CH ;
WIESNER, SJ .
PHYSICAL REVIEW LETTERS, 1992, 69 (20) :2881-2884
[3]   Production of multipartite entanglement for electron spins in quantum dots [J].
Bodoky, F. ;
Blaauboer, M. .
PHYSICAL REVIEW A, 2007, 76 (05)
[4]   Universal quantum computation with the exchange interaction [J].
DiVincenzo, DP ;
Bacon, D ;
Kempe, J ;
Burkard, G ;
Whaley, KB .
NATURE, 2000, 408 (6810) :339-342
[5]   Spins in few-electron quantum dots [J].
Hanson, R. ;
Kouwenhoven, L. P. ;
Petta, J. R. ;
Tarucha, S. ;
Vandersypen, L. M. K. .
REVIEWS OF MODERN PHYSICS, 2007, 79 (04) :1217-1265
[6]   Entanglement teleportation through 1D Heisenberg chain [J].
Hao, X ;
Zhu, SQ .
PHYSICS LETTERS A, 2005, 338 (3-5) :175-181
[7]   Entanglement of a pair of quantum bits [J].
Hill, S ;
Wootters, WK .
PHYSICAL REVIEW LETTERS, 1997, 78 (26) :5022-5025
[8]   Anisotropy and magnetic field effects on the entanglement of a two qubit Heisenberg XY chain -: art. no. 107901 [J].
Kamta, GL ;
Starace, AF .
PHYSICAL REVIEW LETTERS, 2002, 88 (10) :4
[9]   Entanglement and decoherence in near-critical qubit chains [J].
Khveshchenko, DV .
PHYSICAL REVIEW B, 2003, 68 (19)
[10]   Concatenating decoherence-free subspaces with quantum error correcting codes [J].
Lidar, DA ;
Bacon, D ;
Whaley, KB .
PHYSICAL REVIEW LETTERS, 1999, 82 (22) :4556-4559
123