Applying a mixed light field generated from a two-level atomic ensemble to two-photon interference

Applying a mixed light field generated from a two-level atomic ensemble to two-photon interference
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将二能级原子系综产生的混合光场应用于双光子干涉

DOI:
10.1364/prj.386557
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发表时间:
2020-06
期刊:
影响因子:
7.6
通讯作者:
Yuzhu Wang
Yuzhu Wang
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Shuyu Zhou;Shanchao Zhang;Ying Wang;Yuzhu Wang

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由二能级原子系综产生的混合光场可用于双光子干涉。在该混合光场中,由四波混频过程产生的关联双光子提供了双光子干涉信号,而泵浦激光的瑞利散射光子为标定归一化的二阶关联函数提供了稳定的参考。我们使用Hong-Ou-Mandel和Hanbury Brown-Twiss干涉仪演示了双光子干涉。在扰动的实验条件下,将理论预测与实验数据进行了直接的定量比较,表明这种光源在量子测量中具有潜在的应用前景。
A mixed light field generated from a two-level atomic ensemble can be used for two-photon interference. In this mixed light field, correlated paired photons generated from a four-wave mixing process provide a signal of two-photon interference, while Rayleigh scattered photons of the pump laser provide a stable reference to calibrate the normalized second-order correlation function. We demonstrate two-photon interference using the Hong–Ou–Mandel and Hanbury Brown–Twiss interferometers. A direct quantitative comparison between theoretical predictions and experimental data is performed under perturbed experimental conditions, which reveal this kind of light source has potential application for quantum metrology.
致密冷原子云中产生的双光子的相干时间极限
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