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arXiv 0906.3035cond-mat.mes-hallcond-mat.other
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光子晶体腔中单个量子点快速产生纠缠光子对

Fast generation of entangled photon pairs from a single quantum dot embedded in a photonic crystal cavity

P. K. Pathak, S. Hughes

摘要:

我们提出了一个方案,从一个单一的量子点耦合到一个平面光子晶体,支持两个正交偏振腔模式的纠缠光子的快速产生。我们讨论了双激子到激子和激子到基态跃迁通过腔模耦合时纠缠光子的“同代”和"跨代“。在交叉产生中,光子纠缠通过光子之间的时间延迟恢复。双光子的并发,这是一个衡量纠缠,是大于0.7和0.8使用实验可实现的参数在跨代和代内,分别。我们还表明,在这两种情况下,纠缠可以蒸馏使用一个简单的光谱滤波器。

英文摘要:

We present a scheme for the fast generation of entangled photons from a single quantum dot coupled to a planar photonic crystal that support two orthogonally polarized cavity modes. We discuss ``within generation'' and ``across generation'' of entangled photons when both biexciton to exciton, and exciton to ground state transitions, are coupled through cavity modes. In the across generation, the photon entanglement is restored through a time delay between the photons. The two photon concurrence, which is a measure of entanglement, is greater than 0.7 and 0.8 using experimentally achievable parameters in across generation and within generation, respectively. We also show that the entanglement can be distilled in both cases using a simple spectral filter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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