Atomic quantum memory : Cavity versus single-pass schemes
Atomic quantum memory : Cavity versus single-pass schemes
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DOI：
10.1103/physreva.71.043801
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发表时间：
2004-10
影响因子：
2.9
通讯作者：
A. Dantan;A. Bramati;M. Pinard
中科院分区：
文献类型：
--
作者：
A. Dantan;A. Bramati;M. Pinard
我们提出了一种量子力学方法来处理原子系综与传播场相互作用的原子和场的涨落，无论是在电磁诱导透明(EIT)中还是在拉曼情况下。计算了两种情况下的原子自旋噪声谱和出射光场谱。对于合适的参数，EIT和拉曼方案在与原子的传输过程中都有效地保持了入射探测光场的量子态，尽管单程方案的效率本质上低于腔方案。
We present a quantum mechanical treatment for both atomic and field fluctuations of an atomic ensemble interacting with propagating fields, either in electromagnetically induced transparency (EIT) or in a Raman situation. The atomic spin noise spectra and the outgoing field spectra are calculated in both situations. For suitable parameters both EIT and Raman schemes efficiently preserve the quantum state of the incident probe field in the transfer process with the atoms, although a single-pass scheme is shown to be intrinsically less efficient than a cavity scheme.