Thermal entanglement in 1D optical lattice chains with nonlinear coupling

• 来源期刊: 中国物理(英文版)
• 关键词: optical lattice chain nonlinear coupling thermal entanglement
• 年，卷（期）: 2005,（6）
• 页码范围: 1168-1173
• 页数: 6页
• 语种: 英文

摘要

he 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.