Dynamics of entanglement for coherent excitonic states in a system of two coupled quantum dots and cavity QED
Dynamics of entanglement for coherent excitonic states in a system of two coupled quantum dots and cavity QED
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DOI：
10.1103/physreva.65.042326
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发表时间：
2002-04
影响因子：
2.9
通讯作者：
Yu-xi Liu;Ş. Özdemir;M. Koashi;N. Imoto
中科院分区：
文献类型：
--
作者：
Yu-xi Liu;Ş. Özdemir;M. Koashi;N. Imoto
研究了单模腔场作用下两个耦合大量子点系统${（R/a}_{B}\ensuremath{\gg}1）$中相干激子态纠缠的动力学性质.在奇相干态中制备的腔场可以产生最大纠缠相干激子态。当腔中没有光子时，两点间激子相干态的纠缠达到最大。利用两个激子系统的纠缠度研究了零温环境对激子相干态纠缠的影响。
The dynamics of the entanglement for coherent excitonic states in the system of two, coupled, large semiconductor quantum dots ${(R/a}_{B}\ensuremath{\gg}1)$ mediated by a single-mode cavity field is investigated. Maximally entangled coherent excitonic states can be generated by cavity field initially prepared in odd coherent state. The entanglement of the excitonic coherent states between two dots reaches maximum when no photon is present in the cavity. The effects of the zero-temperature environment on the entanglement of excitonic coherent state are also studied using the concurrence for two subsystems of the excitons.