摘要Thermal entanglement is investigated in a two-qubit Heisenberg XYZ system with different Dzyaloshinskii-Moriya (DM) couplings. It is shown that different DM interaction parameters have different influences on the entanglement and the critical temperature. In addition, according to the relation between the real coupling coefficients Jx and Jz, a more efficient DM control parameter can be obtained by adjusting the direction of DM interaction.
Abstract：Thermal entanglement is investigated in a two-qubit Heisenberg XYZ system with different Dzyaloshinskii-Moriya (DM) couplings. It is shown that different DM interaction parameters have different influences on the entanglement and the critical temperature. In addition, according to the relation between the real coupling coefficients Jx and Jz, a more efficient DM control parameter can be obtained by adjusting the direction of DM interaction.
(Quantized spin models, including quantum spin frustration)
引用本文:
LI Da-Chuang;CAO Zhuo-Liang. Thermal Entanglement in the Anisotropic Heisenberg XYZ Model with Different Dzyaloshinskii-Moriya Couplings[J]. 中国物理快报, 2009, 26(2): 20309-020309.
LI Da-Chuang, CAO Zhuo-Liang. Thermal Entanglement in the Anisotropic Heisenberg XYZ Model with Different Dzyaloshinskii-Moriya Couplings. Chin. Phys. Lett., 2009, 26(2): 20309-020309.
[1] Bennett C H and Wiesner S J 1992 Phys. Rev. Lett. 69 2881 Bennett C H et al 1993 Phys. Rev. Lett. 70 1895 Ekert A K 1991 Phys. Rev. Lett. 67 661 Murao M et al 1999 Phys. Rev. A 59 156 [2] Lidar D A, Bacon D and Whaley K B 1999 Phys. Rev.Lett. 82 4556 DiVincenzo D P et al 2000 Nature 408 339 Santos L F 2003 Phys. Rev. A 67 062306 [3] Kane B E 1998 Nature 393 133 [4] Loss D and DiVincenzo D P 1998 Phys. Rev. A 57 120 Burkard G, Loss D and DiVincenzo D P 1999 Phys. Rev. B 59 2070 Trauzettel B et al 2007 Nature Phys. 3 192 [5] Senthil T et al 1999 Phys. Rev. B 60 4245 Nishiyama M et al 2007 Phys. Rev. Lett. 98047002 [6] S\o rensen A and M\o lmer K 1999 Phys. Rev. Lett. 83 2274 [7] Aky\"{uz C, Aydiner E and M\"{ustecaplio\v{glu \"{O E2008 Opt. Commun. 281 5271 [8] Yang Z et al 2008 Phys. Rev. Lett. 100 067203 Gunlycke D et al 2001 Phys. Rev. A 64 042302 [9] Kamta G L and Starace Anthony F 2002 Phys. Rev.Lett. 88 107901 Wang X G 2002 Phys. Rev. A 66 034302 Sun Y et al 2003 Phys. Rev. A 68 044301 Kao Z C et al 2005 Phys. Rev. A 72 062302 Zhu S L 2006 Phys. Rev. Lett. 96 077206 [10] Asoudeh M and Karimipour V 2005 Phys. Rev. A 71 022308 Zhang G F 2007 Phys. Rev. A 75 034304 [11] Zhang G F and Li S S 2005 Phys. Rev. A 72034302 Zhou Y et al. 2007 Phys. Rev. A 75 062304 Kargarian M et al 2008 Phys. Rev. A 77 032346 [12] Zhou L et al 2003 Phys. Rev. A 68 024301 Yang G H et al e-print arXiv:quant-ph/ 0602051 [13] Kheirandish F et al 2008 Phys. Rev. A 77042309 Gurkan Z N and Pashaev O K, e-printarXiv:quant-ph/0705.0679and arXiv:quant-ph/0804.0710 [14] Li D C, Wang X P and Cao Z L 2008 J. Phys.: Condens.Matter 20 325229 [15] Li D C and Cao Z L 2008 Eur. Phys. J. D 50207 [16] Hill S and Wootters W K 1997 Phys. Rev. Lett. 78 5022 Wootters W K 1998 Phys. Rev. Lett. 80 2245
2009, Vol. 26 
