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Proceedings Paper

Quantum cryptography with a single photon source
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Paper Abstract

Quantum cryptography is a method to exchange secret messages with unconditional security over a potentially hostile environment using single photons. Previous implementations of quantum cryptography have relied on highly attenuated laser light to approximate single photo states. Such sources are vulnerable to eavesdropping attacks based on photon splitting. Here we present an experimental demonstration of quantum cryptography using a single photon source based on Indium Arsenide quantum dots. We achieve a communication rate of 25kbits/s. This source allows secure communication over a quantum channel with up to 28dB of channel loss, as opposed to only 23dB for an attenuated laser.

Paper Details

Date Published: 3 February 2004
PDF: 11 pages
Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); doi: 10.1117/12.512319
Show Author Affiliations
Edo Waks, Stanford Univ. (United States)
Kyo Inoue, Stanford Univ. (United States)
NTT Basic Research Labs. (Japan)
Charles Santori, Stanford Univ. (United States)
David Fattal, Stanford Univ. (United States)
Jelena Vuckovic, Stanford Univ. (United States)
Glenn S. Solomon, Stanford Univ. (United States)
Yoshihisa Yamamoto, Stanford Univ. (United States)
NTT Basic Research Labs. (Japan)

Published in SPIE Proceedings Vol. 5161:
Quantum Communications and Quantum Imaging
Ronald E. Meyers; Yanhua Shih, Editor(s)

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