| Intrinsic decoherence of entanglement of a single quantized field interacting with a two-level atom |
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| 引用本文： | ZHANG Jian SHAO Bin. Intrinsic decoherence of entanglement of a single quantized field interacting with a two-level atom[J]. 原子与分子物理学报, 2006, 23(B04): 93-97 |
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| 作者姓名： | ZHANG Jian SHAO Bin |
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| 作者单位： | Department of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China） |
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| 摘 要： |
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| 关 键 词： | 固有脱散 纠缠 Jaynes-Cummings模型 光子数 兴奋态 |
| 文章编号： | 1000-0364（2006）增刊-0093-05 |
Intrinsic decoherence of entanglement of a single quantized field interacting with a two-level atom |
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| ZHANG;Jian;SHAO;Bin. Intrinsic decoherence of entanglement of a single quantized field interacting with a two-level atom[J]. Journal of Atomic and Molecular Physics, 2006, 23(B04): 93-97 |
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| Authors: | ZHANG Jian SHAO Bin |
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| Abstract: | How the mean photon number, the probability of excited state and intrinsic decoherenee coefficient in-fluence the time evolution of entanglement is unknown, when a single-mode quantized optic field and a two-levelatom coupling system is governed by Milburn equation. The Jaynes-Cummings model is considered. A lowerhound of concurrence is proposed to calculate the entanglement. Simulation results indicate that the entanglementof system increases following the increasing of intrinsic decoherence coefficient or the decreasing of the mean photon number. Besides that, the entanglement of system decreases, while the probability of exited state increasesfrom 0 to 0.1, and increases, while the probability of exited state increases from 0.1 to 1. |
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| Keywords: | Intrinsic decoherence entanglement Jaynes-Cummings model the lower bound of concurrence |
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