arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0010106quant-ph
收藏

掺杂光子晶体中的光子-光子关联和纠缠

Photon-photon correlations and entanglement in doped photonic crystals

David Petrosyan, Gershon Kurizki

摘要:

研究了一种中间跃迁与光子带隙边近共振耦合的四能级原子掺杂的光子晶体。我们发现,两个光子,每个耦合到一个不同的原子跃迁在这样的原子,可以表现出很强的相位或振幅相关性:一个光子可以引起另一个光子的大相移或触发其吸收,从而作为一个超灵敏的非线性光子开关。这些特征允许创建纠缠的双光子状态,并且与先前考虑的介质相比具有独特的优势:(i)不需要控制激光器;(ii)可以选择系统参数以通过吸收引起完全的双光子纠缠;(iii)可以在网络中组合多个PC。

英文摘要:

We consider a photonic crystal (PC) doped with four-level atoms whose intermediate transition is coupled near-resonantly with a photonic band-gap edge. We show that two photons, each coupled to a different atomic transition in such atoms, can manifest strong phase or amplitude correlations: One photon can induce a large phase shift on the other photon or trigger its absorption and thus operate as an ultrasensitive nonlinear photon-switch. These features allow the creation of entangled two-photon states and have unique advantages over previously considered media: (i) no control lasers are needed; (ii) the system parameters can be chosen to cause full two-photon entanglement via absorption; (iii) a number of PCs can be combined in a network.

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。

↑