Nonlinear interaction between broadband single-photon-level coherent states

被引：11

作者：

Li, Yuanhua ^{[1
,2
]}

Xiang, Tong ^{[1
,2
]}

Nie, Yiyou ^{[3
]}

Sang, Minghuang ^{[3
]}

Chen, Xianfeng ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys & Astron, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, CICIFSA, Minist Educ, Key Lab Laser Plasma, Shanghai 200240, Peoples R China

[3] Jiangxi Normal Univ, Dept Phys, Nanchang 330022, Jiangxi, Peoples R China

来源：

PHOTONICS RESEARCH | 2017年 / 5卷 / 04期

基金：

中国国家自然科学基金;

关键词：

2ND-HARMONIC GENERATION; WAVE-GUIDES; OPTICS;

D O I：

10.1364/PRJ.5.000324

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally demonstrate the nonlinear interaction between two chirped broadband single-photon-level coherent states. Each chirped coherent state is generated in independent fiber Bragg gratings. They are simultaneously coupled into a high-efficiency nonlinear waveguide, where they are converted into a narrowband single-photon state with a new frequency by the process of sum-frequency generation (SFG). A higher SFG efficiency of 1.06 x 10(-7) is realized, and this efficiency may achieve heralding entanglement at a distance. This also made it possible to realize long-distance quantum communication, such as device-independent quantum key distribution, by directly using broadband single photons without filtering. (C) 2017 Chinese Laser Press

引用

页码：324 / 328

页数：5

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