Single-photon interference over 150 km transmission using silica-based integrated-optic interferometers for quantum cryptography

被引：67

作者：

Kimura, T

Nambu, Y

Hatanaka, T

Tomita, A

Kosaka, H

Nakamura, K

机构：

[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Yokohama, Kanagawa 2260026, Japan

[2] NEC Corp Ltd, Fundamental & Environm Res Labs, Tsukuba, Ibaraki 3058501, Japan

[3] NEC Corp Ltd, Fiber Opt Devices Div, Yamanashi 4010016, Japan

[4] JST, ERATO, Quantum Computat & Informat Project, Tsukuba, Ibaraki 3058501, Japan

[5] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2004年 / 43卷 / 9A-B期

关键词：

optical communication; quantum cryptography; integrated optoelectronics;

D O I：

10.1143/JJAP.43.L1217

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have demonstrated single-photon interference over 150 km using time-division interferometers for quantum cryptography, which were composed of two integrated-optic asymmetric Mach-Zehnder interferometers, and balanced gated-mode photon detectors. The observed fringe visibility was more than 80% after 150 km transmission.

引用

页码：L1217 / L1219

页数：3

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