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arXiv 1001.3281quant-phcond-mat.otherphysics.atom-ph
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光子的原子量子库工程

Engineering Atomic Quantum Reservoirs for Photons

Susanne Pielawa, Luiz Davidovich, David Vitali, Giovanna Morigi

摘要:

我们提出的协议创建纠缠态的两个模式的电磁场,通过使用一束原子交叉微波谐振器。原子被横向经典场驱动,并将相关光子泵入(i)腔的两个模式和(ii)两个远距离腔的模式。该协议是基于一个随机的动力学,其特征在于随机到达时间的原子和原子和腔模式之间的随机相互作用时间。由此产生的有效模型产生一个主方程,其稳态是腔模的纠缠态。在这方面,原子就像一个量子库,将腔模拉入纠缠的爱因斯坦-波多尔斯基-罗森(EPR)态,其纠缠程度由横向场的强度和频率控制。该方案对原子束中的随机波动具有鲁棒性,并且不需要原子检测也不需要速度选择。

英文摘要:

We present protocols for creating entangled states of two modes of the electromagnetic field, by using a beam of atoms crossing microwave resonators. The atoms are driven by a transverse, classical field and pump correlated photons into (i) two modes of a cavity and (ii) the modes of two distant cavities. The protocols are based on a stochastic dynamics, characterized by random arrival times of the atoms and by random interaction times between atoms and cavity modes. The resulting effective model yields a master equation, whose steady state is an entangled state of the cavity modes. In this respect, the atoms act like a quantum reservoir, pulling the cavity modes into an entangled, Einstein-Podolski-Rosen (EPR) state, whose degree of entanglement is controlled by the intensity and the frequency of the transverse field. This scheme is robust against stochastic fluctuations in the atomic beam, and it does not require atomic detection nor velocity selection.

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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