Entanglement swapping using telecom-band photons generated in fibers

被引：30
作者：
Takesue, Hiroki [1 ,2 ]
Miquel, Benjamin [1 ,3 ]
机构：
[1] NTT Basic Res Labs, NTT Corp, Atsugi, Kanagawa 2430198, Japan
[2] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
[3] Ecole Normale Super, F-75005 Paris, France
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 13期
关键词：
INGAAS/INP AVALANCHE PHOTODIODE; QUANTUM COMMUNICATION; WAVE-GUIDE; PAIR SOURCE; INTERFERENCE; LIGHT;
D O I：
10.1364/OE.17.010748
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the first entanglement swapping experiment using entangled photon-pair sources based on spontaneous four-wave mixing (SFWM). The 1.5-mu m band entangled photon pairs generated by SFWM in two independent 500-m dispersion shifted fibers exhibited quantum interference, thanks to the negligible walk-off between the pump and photon pairs. The use of 500-MHz gated-mode InGaAs/InP avalanche photodiodes based on the sine-wave gating technique increased the fourfold coincidence rate. As a result, the formation of an entanglement between photons from independent sources was successfully observed. (C) 2009 Optical Society of America
引用
收藏
页码：10748 / 10756
页数：9
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