摘要
我们在 Tavis-Cummings 模型与起始的分成三部分的纠缠的象 W 一样状态学习二个原子的纠纷动力学。我们发现纠纷发展不仅对起始的状态的纠纷度而且到起始的状态的具体形式敏感。所谓的突然的死亡效果仅仅为一些起始的状态发生。
We study the entanglement dynamics of two atoms with initial tripartite entangled W-like state in the Tavis-Cummings model. We find that the entanglement evolvement is sensitive not only to the entanglement degree of the initial state but also to the concrete form of the initial state. The so-called sudden death effect occurs only for some initial states.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 60678022 and 10704001, the Specialized Research Fund for the Doctoral Programme of Higher Education of China under Grant No 20060357008, Anhui Provincial Natural Science Foundation under Grant No 070412060, the Key Programme of the Education Department of Anhui Province under Grant No 2006KJ070A, the Talent Foundation Of Anhui University, and Anhui Key Laboratory of Information Materials and Devices （Anhui University）.
