Homodyne detection for quantum key distribution: an alternative to photon counting in BB84 protocol

被引：0
|
作者：
Costa e Silva, M. B. [1 ]
Xu, Q. [1 ]
Agnolini, S. [1 ]
Gallion, P. [1 ]
Mendieta, F. J. [2 ]
机构：
[1] Telecom Paris, Ecole Natl Super Telecommun, GET, 46 Rue Barrault, F-75013 Paris, France
[2] CICESE, Ensenada 22800, Baja California, Mexico
来源：
PHOTONICS NORTH 2006, PTS 1 AND 2 | 2006年 / 6343卷
关键词：
quantum key distribution; quantum cryptography; coherent detection; homodyne detection; QPSK modulation; BB84; protocol;
D O I：
10.1117/12.707785
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This paper presents the principles and experimental results of an optical fiber QKD system operating at 1550 nm; and using the BB84 protocol with QPSK signals. Our experimental setup consists of a time-multiplexed super-homodyne configuration using P.LN detectors in a differential scheme as an alternative to avalanche photon counting. Transmission over 11 km of optical fiber has been done using this detection scheme and major relevant characteristics such as noise, quantum efficiency and bit error rate (BER) are reported.
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页数：11
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