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The Effect of Diffraction on a Pulse of Squeezed Light in the Protocol of a Multimode Resonant Quantum Memory Based on a Thermal Atomic Ensemble
Optics and Spectroscopy ( IF 0.6 ) Pub Date : 2020-10-13 , DOI: 10.1134/s0030400x20090258
E. R. Zinatullin , K. S. Tikhonov , T. Yu. Golubeva , Yu. M. Golubev

The effect of diffraction on the conservation of the quantum state of a quadrature-squeezed light pulse in an ensemble of thermal atoms for a collinear configuration of light fields has been considered. The motion of atoms leads to the fact that when both the signal and control fields propagate in the same direction as when writing, there is an uncompensated phase incursion even in the case of forward reading. This phase incursion leads to the fact that the squeezed quadrature of the light pulse is mixed with a stretched one. As a result, the pulse squeezing can decrease significantly. The analyses of the effect of diffraction for different configurations of the multimode resonant quantum memory protocol has been performed and the ways to reduce this effect to a possible minimum have been found.



中文翻译:

基于热原子集成的多模共振量子存储器协议中衍射对压缩光脉冲的影响。

对于光场的共线配置,已经考虑了衍射对在热原子集合中正交压缩的光脉冲的量子态守恒的影响。原子的运动导致这样一个事实,即当信号场和控制场都在与写入时相同的方向上传播时,即使在正向读取的情况下,也存在未补偿的相位干扰。这种相位侵入导致这样的事实,即光脉冲的压缩正交与拉伸脉冲混合在一起。结果,脉冲压缩可以显着降低。已经对多模谐振量子存储协议的不同配置的衍射效应进行了分析,并且找到了将这种效应减小到可能的最小值的方法。

更新日期:2020-10-16
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