Generation of high-purity entangled photon pairs using silicon wire waveguide

被引：104

作者：

Harada, Ken-ichi ^{[1
,3
]}

Takesue, Hiroki ^{[1
,3
]}

Fukuda, Hiroshi ^{[2
]}

Tsuchizawa, Tai ^{[2
]}

Watanabe, Toshifumi ^{[2
]}

Yamada, Koji ^{[2
]}

Tokura, Yasuhiro ^{[1
,3
]}

Itabashi, Sei-ichi ^{[2
]}

机构：

[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] NTT Corp, NTT Microsyst Integrat Labs, Atsugi, Kanagawa 2430198, Japan

[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 25期

关键词：

D O I：

10.1364/OE.16.020368

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We observed high-purity correlated and entangled photon pairs generated through spontaneous four-wave mixing (SFWM) in a silicon wire waveguide (SWW). Employing a nano-scale silicon waveguide with a low loss mode size converter, we obtained a high coincidence to accidental coincidence ratio (CAR) of around 200 that was larger than that of cooled dispersion shifted fiber (DSF) by a factor 3.2, and observed the two-photon interference fringe of time-bin entangled photons with > 95% visibility without subtracting the accidental coincidences. (C) 2008 Optical Society of America

引用

页码：20368 / 20373

页数：6

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