Thermal entanglement in 1D optical lattice chains with nonlinear coupling

doi:10.1088/1009-1963/14/6/019

中国物理B ›› 2005, Vol. 14 ›› Issue (6): 1168-1173.doi: 10.1088/1009-1963/14/6/019

Thermal entanglement in 1D optical lattice chains with nonlinear coupling

周玲, 衣学喜, 宋鹤山, 郭彦青

Department of Physics,Dalian University of Technology,Dalian 116024,China

收稿日期:2004-08-02 修回日期:2005-01-24 出版日期:2005-05-27 发布日期:2005-05-27
基金资助:
Project supported by the National Natural Science Foundation of China(Grant Nos 10347103 and 10305002

Thermal entanglement in 1D optical lattice chains with nonlinear coupling

Zhou Ling (周玲), Yi Xue-Xi (衣学喜), Song He-Shan (宋鹤山), Guo Yan-Qing (郭彦青)

Department of Physics,Dalian University of Technology, Dalian 116024, China

Received:2004-08-02 Revised:2005-01-24 Online:2005-05-27 Published:2005-05-27
Supported by:
Project supported by the National Natural Science Foundation of China(Grant Nos 10347103 and 10305002

摘要/Abstract

摘要： The thermal entanglement of spin-1 atoms with nonlinear coupling in an optical lattice chain is investigated for two-particle and multi-particle systems.It is flund that the relation between linear coupling and nonlinear coupling is the key to determine thermal entanglement, which shows in what kinds of atomsthermal entanglement exists.Thisresult is true both for two-particle and multi-particle systems. For multi-particle systems,the thermal entanglement does not decrease greatly,and the critical temperature decreases only slightly.

关键词: optical lattice chain, nonlinear coupling, thermal entanglement

Abstract: The thermal entanglement of spin-1 atoms with nonlinear coupling in an optical lattice chain is investigated for two-particle and multi-particle systems. It is found that the relation between linear coupling and nonlinear coupling is the key to determine thermal entanglement, which shows in what kinds of atoms thermal entanglement exists. This result is true both for two-particle and multi-particle systems. For multi-particle systems, the thermal entanglement does not decrease greatly, and the critical temperature decreases only slightly.

Key words: optical lattice chain, nonlinear coupling, thermal entanglement

中图分类号: (Quantum optics)

42.50.-p

32.80.-t (Photoionization and excitation) 42.65.-k (Nonlinear optics)

周玲, 衣学喜, 宋鹤山, 郭彦青. Thermal entanglement in 1D optical lattice chains with nonlinear coupling[J]. 中国物理B, 2005, 14(6): 1168-1173.

Zhou Ling (周玲), Yi Xue-Xi (衣学喜), Song He-Shan (宋鹤山), Guo Yan-Qing (郭彦青). Thermal entanglement in 1D optical lattice chains with nonlinear coupling[J]. Chinese Physics, 2005, 14(6): 1168-1173.

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Thermal entanglement in 1D optical lattice chains with nonlinear coupling

Thermal entanglement in 1D optical lattice chains with nonlinear coupling

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