Statistics of photon-subtracted and photon-added states
Statistics of photon-subtracted and photon-added states
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DOI：
10.1103/physreva.98.013809
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发表时间：
2018-07-05
影响因子：
2.9
通讯作者：
Speirits, Fiona C.
中科院分区：
文献类型：
--
作者：
Barnett, Stephen M.;Ferenczi, Gergely;Speirits, Fiona C.
一般来说，在场模中减去或增加规定数量的光子，并不是简单地将概率分布移动减去或增加的光子的数量。例如，从初始相干态中减去一个光子，光子统计不变，而应用于初始热态的相同过程会增加平均光子数。我们提出了一个详细的分析的影响的初始光子统计的状态，光子已被减去或添加到其中。我们的方法是基于两个密切相关的时刻生成函数，一个是建立和一个，我们介绍。
The subtraction or addition of a prescribed number of photons to a field mode does not, in general, simply shift the probability distribution by the number of subtracted or added photons. Subtraction of a photon from an initial coherent state, for example, leaves the photon statistics unchanged and the same process applied to an initial thermal state increases the mean photon number. We present a detailed analysis of the effects of the initial photon statistics on those of the state from which the photons have been subtracted or to which they have been added. Our approach is based on two closely related moment-generating functions, one that is well established and one that we introduce.