Single-photon generation from stored excitation in an atomic ensemble
Single-photon generation from stored excitation in an atomic ensemble
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DOI：
10.1103/physrevlett.92.213601
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发表时间：
2004-05-28
影响因子：
8.6
通讯作者：
Kimble, HJ
中科院分区：
文献类型：
--
作者：
Chou, CW;Polyakov, SV;Kimble, HJ
单光子是通过Duan等人的协议从冷Cs原子系综中产生的。[自然(伦敦)414,413(2001)]。以852 nm处的场1的初始检测为条件，场2中894 nm处的光子以受控的方式从存储在原子系综内的激发中产生。证明了场2的单量子性质是违反柯西-施瓦茨不等式的，即w(1(2)，1(2)\to1(1))=0.24+/-0.05不大于或等于1，其中w(1(2)，1(2)\1(1))描述了两个事件(1(2)，1(2))的探测，条件是初始探测1(1)，其中w-gt；0表示单光子。
Single photons are generated from an ensemble of cold Cs atoms via the protocol of Duan et al. [Nature (London) 414, 413 (2001)]. Conditioned upon an initial detection from field 1 at 852 nm, a photon in field 2 at 894 nm is produced in a controlled fashion from excitation stored within the atomic ensemble. The single-quantum character of field 2 is demonstrated by the violation of a Cauchy-Schwarz inequality, namely w(1(2),1(2)\ to1(1))=0.24+/-0.05not greater than or equal to1, where w(1(2),1(2)\1(1)) describes the detection of two events (1(2),1(2)) conditioned upon an initial detection 1(1), with w-->0 for single photons.