Photon-number selective group delay in cavity induced transparency.
Photon-number selective group delay in cavity induced transparency.
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DOI：
10.1103/physrevlett.105.013601
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发表时间：
2009-10
影响因子：
8.6
通讯作者：
G. Nikoghosyan;M. Fleischhauer
中科院分区：
文献类型：
--
作者：
G. Nikoghosyan;M. Fleischhauer
结果表明，在量子化腔模驱动的Λ类原子系综中，探测脉冲的群速度依赖于输入探测脉冲的量子态。在原子-腔系统的强耦合区域，探测群延迟是光子数选择性的。这可用于在空间上将单光子与少数光子探测脉冲的较高光子数分量分开，从而创建确定性的单光子源。
We show that the group velocity of a probe pulse in an ensemble of Λ-type atoms driven by a quantized cavity mode depends on the quantum state-of-the input probe pulse. In the strong-coupling regime of the atom-cavity system the probe group delay is photon-number selective. This can be used to spatially separate the single photon from higher photon-number components of a few-photon probe pulse and thus create a deterministic single-photon source.