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arXiv 1102.4449quant-ph
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用全光纤光子对源表征预示的单光子

Characterizing heralded single photons with an all-fiber source of photon pairs

Lei Yang, Xiaoxin Ma, Xueshi Guo, Liang Cui, Xiaoying Li

摘要:

基于脉冲泵浦在高非线性光纤中产生的信号光子对和闲频光子对,我们从理论和实验两方面对这种单光子源进行了表征。在理论模型中,从导出的宽带脉冲泵浦的Bogoliubov变换表达式出发,分析和讨论了二阶强度关联函数$g_c^{(2)}(0)$、预示效率$H$、不透明度和被预示单光子亮度随光源参数的变化关系。在实验中,采用几种源参数的组合,测量和比较了$g_c^{(2)}(0)$和$H$的值。实验结果与理论预测一致。这些研究对于优化单光子源的参数和研制适用于量子信息处理的单光子源具有重要意义。

英文摘要:

Based on the signal and idler photon pairs produced in a piece of high nonlinear fiber by a pulsed pump, we characterize the heralded single photon source from both the theoretical and experimental aspects. In the theory model, started from the derived expression of Bogoliubov transformation for a broadband pulsed pump, the second-order intensity correlation function $g_c^{(2)}(0)$, heralding efficiency $H$, indistinguishability and brightness of the heralded single photons as a function of source parameters are analyzed and discussed. In the experiments, using several kinds of combinations of the source parameters, the values of $g_c^{(2)}(0)$ and $H$ are measured and compared. The experimental results are consistent with the theoretical predictions. The investigations are useful for optimizing the parameters and for developing a single photon source suitable for quantum information processing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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