Characterization of two-photon interference between a weak coherent state and a heralded single photon state

被引：2
|
作者：
Xu, Aojie [1 ]
Duan, Lifeng [1 ]
Wang, Lirong [2 ,3 ]
Zhang, Yun [1 ]
机构：
[1] Univ Electro Commun, Dept Engn Sci, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan
[2] Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[3] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
来源：
OPTICS EXPRESS | 2023年 / 31卷 / 04期
基金：
日本学术振兴会;
关键词：
QUANTUM;
D O I：
10.1364/OE.479535
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We experimentally investigate two-photon interference between a weak coherent state and a heralded single-photon state, producing from a spontaneous parametric down conversion. Both the unequal spectrum linewidth and average photon number ratio in a given time interval are considered in our model. We obtained excellent agreement between our experimental data and prediction from our model. Furthermore, the range of observing high visibility two -photon interference is significantly extended by isolating coincidence events from two-photon contributions in the weak coherent state. These results may throw some new light on quantum information technology when the two-photon interference with independent sources is required.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码：5662 / 5669
页数：8
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