Modified spontaneous emission and qubit entanglement from dipole-coupled quantum dots in a photonic crystal nanocavity.
Modified spontaneous emission and qubit entanglement from dipole-coupled quantum dots in a photonic crystal nanocavity.
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DOI：
10.1103/physrevlett.94.227402
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发表时间：
2005-06
影响因子：
8.6
通讯作者：
S. Hughes
中科院分区：
文献类型：
--
作者：
S. Hughes
从理论上研究了平面光子晶体中两个光子耦合量子点的修正自发发射动力学。基于光子格林函数技术对任意环境中的电磁场进行量子化，明显的真空拉比振荡和偶极子-偶极子相互作用被自洽地结合在一起，并被证明会导致高度的量子比特纠缠。具有不同光学偶极矩的量子点也被发现产生了非常丰富的量子动力学显示，并且比耦合相同原子提供了几个优点。
The modified spontaneous emission dynamics of two photon-coupled quantum dots in a planar-photonic crystal are theoretically investigated. Based on a photon Green function technique for quantizing the electromagnetic fields in arbitrary surroundings, pronounced vacuum Rabi oscillations and dipole-dipole interactions are self-consistently incorporated and are shown to result in a high degree of quantum-bit entanglement. Quantum dots with different optical dipole moments are also found to yield a very rich display of quantum dynamics and offer several advantages over coupling identical atoms.