Modified E91 protocol demonstration with hybrid entanglement photon source

被引：9

作者：

Fujiwara, Mikio ^{[1
]}

Yoshino, Ken-ichiro ^{[2
]}

Nambu, Yoshihiro ^{[3
]}

Yamashita, Taro ^{[4
]}

Miki, Shigehito ^{[4
]}

Terai, Hirotaka ^{[4
]}

Wang, Zhen ^{[4
,5
]}

Toyoshima, Morio ^{[1
]}

Tomita, Akihisa ^{[6
]}

Sasaki, Masahide ^{[1
]}

机构：

[1] Natl Inst Informat & Commun Technol NICT, Quantum ICT Lab, Koganei, Tokyo 1848795, Japan

[2] NEC Corp Ltd, Green Platform Res Labs, Nakahara Ku, Kawasaki, Kanagawa 2118666, Japan

[3] NEC Corp Ltd, Smart Energy Res Labs, Tsukuba, Ibaraki 3058501, Japan

[4] Natl Inst Informat & Commun Technol NICT, Nano ICT Lab, Kobe, Hyogo 6512492, Japan

[5] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Ctr SuperCond, Shanghai 200050, Peoples R China

[6] Hokkaido Univ, Grad Sch Informat Sci & Technol, Kita Ku, Sapporo, Hokkaido 0600814, Japan

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 11期

关键词：

QUANTUM KEY DISTRIBUTION; SYSTEM; FIBER;

D O I：

10.1364/OE.22.013616

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on an experimental demonstration of the modified Ekert 91 protocol of quantum key distribution using a hybrid entanglement source with two different degrees of freedoms, a 1550 nm time-bin qubit and 810 nm polarization qubit. The violation of the Clauser-Horne-Shimony-Holt inequality could be demonstrated for the entanglement between the polarization qubit in free space and the time-bin qubit through 20 km fiber transmission. The secure key rate in our system is estimated 70-150 bps. (C) 2014 Optical Society of America

引用

页码：13616 / 13624

页数：9

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