Quantum entanglement in the mode-mode competition system

• 来源期刊: 中国物理B(英文版)
• 关键词: mode-mode competition system entanglement reduced entropy relative entropy
• 年，卷（期）: 2008,（8）
• 页码范围: 2963-2968
• 页数: 6页
• 语种: 英文

摘要

Considering a two-level atom interacting with the competing two-mode field, this paper investigates the entangle-ment between the two-level atom and the two-mode field by using the quantum reduced entropy, and that between the two-mode field by using the quantum relative entropy of entanglement. It shows that the two kinds of entanglement are dependent on the relative coupling strength of atom-field and the atomic distribution, and exhibit the periodical evolu-tion. The maximal atom-field entanglement state can be prepared via the appropriate selection of system parameters and interaction time.