Generation of Einstein-Podolsky-Rosen-entangled radiation through an atomic reservoir.
Generation of Einstein-Podolsky-Rosen-entangled radiation through an atomic reservoir.
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DOI：
10.1103/physrevlett.98.240401
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发表时间：
2007-01
影响因子：
8.6
通讯作者：
Susanne Pielawa;G. Morigi;D. Vitali;L. Davidovich
中科院分区：
文献类型：
--
作者：
Susanne Pielawa;G. Morigi;D. Vitali;L. Davidovich
我们提出了一个在高Q谐振腔中产生双模压缩的方案，利用一束具有随机到达时间的原子作为光场的储存器。该方案是基于四波混频过程导致发射到两个腔模式，这是共振的原子偶极跃迁的拉比边带，驱动的饱和经典场。在稳态下，腔模处于Einstein-Podolsky-罗森态，其纠缠度由横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，不需要原子检测也不需要速度选择，并且可以通过目前可用的具有微波谐振器的实验装置来实现。
We propose a scheme for generating two-mode squeezing in high-Q resonators using a beam of atoms with random arrival times, which acts as a reservoir for the field. The scheme is based on four-wave mixing processes leading to emission into two cavity modes, which are resonant with the Rabi sidebands of the atomic dipole transition, driven by a saturating classical field. At steady state the cavity modes are in an Einstein-Podolsky-Rosen 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, does not require atomic detection nor velocity selection, and can be realized by presently available experimental setups with microwave resonators.