原子与分子物理学报2006，Vol.23Issue(3)：417-421,5.
单模光场与二能级原子的纠缠的内禀退相干
Intrinsic decoherence of entanglement of a single quantized field interacting with a two-level atom
摘要
Abstract
How the mean photon number, the probability of excited state and intrinsic decoherence coefficient influence the time evolution of entanglement is unknown, when a singlemode quantized optic field and a two-level atom coupling system is governed by Milburn equation. The Jaynes-Cummings model is considered. A lower bound of concurrence is proposed to calculate the entanglement. Simulation results indicate that the entanglement of system increases following the increasing of intrinsic decoherence coefficient or the decreasing of the mean photon number. Besides that, the entanglement of the system decreases, while the probability of the exited state increases from 0 to 0.1, and increases, while the probability of the exited state increases from 0.1 to 1.
关键词
内禀退相干/纠缠/Jaynes-Cummings模型/concurrence下限Key words
Jaynes-Cummings model/intrinsic decoherence/entanglement/the lower bound of concurrence
分类
数理科学引用本文复制引用
张剑,邵彬..单模光场与二能级原子的纠缠的内禀退相干[J].原子与分子物理学报,2006,23(3):417-421,5.
