Energy-time entanglement generation in optical fibers under CW pumping

被引：30

作者：

Dong, Shuai ^{[1
]}

Zhou, Qiang ^{[1
]}

Zhang, Wei ^{[1
]}

He, Yuhao ^{[2
]}

Zhang, Weijun ^{[2
]}

You, Lixing ^{[2
]}

Huang, Yidong ^{[1
]}

Peng, Jiangde ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 01期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

PHOTON-PAIR GENERATION; 1.5; MU-M; CORRELATED PHOTONS; BELL STATES;

D O I：

10.1364/OE.22.000359

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, the energy-time entangled photon-pairs at 1.5 mu m are generated by the spontaneous four wave mixing (SFWM) in optical fibers under continuous wave (CW) pumping. The energy-time entanglement property is demonstrated experimentally through an experiment of Franson-type interference. Although the generation rates of the noise photons are one order of magnitude higher than that of the photon-pairs under CW pumping, the impact of noise photons can be highly suppressed in the measurement by a narrow time domain filter supported by superconducting nanowire single photon detectors with low timing jitters and time correlated single photon counting (TCSPC) module with high time resolution. The experiment results show that the SFWM in optical fibers under CW pumping provides a simple and practical way to generate energy-time entanglement at 1.5 mu m, which has great potential for long-distance quantum information applications over optical fibers. (C)2014 Optical Society of America

引用

页码：359 / 368

页数：10

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