Coherence-Enhanced Entanglement Induced by a Two-Mode Thermal Field

• 来源期刊: 理论物理通讯(英文版)
• 学科: 物理学
• 关键词: 纠缠态原子 诱导模 连贯性 两能级原子 热场 原子相干 双光子过程 相互作用
• 年，卷（期）: 2010,（9）
• 页码范围: 421-426
• 页数: 6页
• 分类号: O431.2 O153.3
• 语种: 英文

摘要

Considering two identical two-level atoms interacting with two mode thermal field through a nondegeratetwo-photon process,we study the entanglement dynamics between two atoms when the atomic coherence exists.It showsthat the entanglement is dependent on the initial atomic states,and is greatly enhanced due to atomic coherence ascompared with the case when the atomic coherence is ignored.The results also show that the entanglement can becontrolled by changing the relative phases and the amplitudes of the polarized atoms.