Developments towards practical free-space quantum cryptography

P.R. Tapster; P.M. Gorman; D.M. Benton; D.M. Taylor; B.S. Lowans

doi:10.1117/12.605539

Developments towards practical free-space quantum cryptography

P.R. Tapster, P.M. Gorman, D.M. Benton, D.M. Taylor, B.S. Lowans

Aston Institute of Photonic Technologies (AiPT)

Research output: Chapter in Book/Published conference output › Conference publication

Abstract

We describe a free space quantum cryptography system which is designed to allow continuous unattended key exchanges for periods of several days, and over ranges of a few kilometres. The system uses a four-laser faint-pulse transmission system running at a pulse rate of 10MHz to generate the required four alternative polarization states. The receiver module similarly automatically selects a measurement basis and performs polarization measurements with four avalanche photodiodes. The controlling software can implement the full key exchange including sifting, error correction, and privacy amplification required to generate a secure key.

Original language	English
Title of host publication	Quantum information and computation III
Editors	Eric J. Donkor, Andrew R. Pirich, Howard E. Brandt
Publisher	SPIE
Pages	176-179
Number of pages	4
DOIs	https://doi.org/10.1117/12.605539
Publication status	Published - 1 Jan 2005
Event	Quantum Information and Computation III - Orlando, FL, United States Duration: 28 Mar 2005 → …

Publication series

Name	SPIE proceedings
Publisher	SPIE
Volume	5851
ISSN (Print)	0277-786X

Conference

Conference	Quantum Information and Computation III
Country/Territory	United States
City	Orlando, FL
Period	28/03/05 → …

Bibliographical note

P. R. Tapster ; P. M. Gorman ; D. M. Benton ; D. M. Taylor and B. S. Lowans, "Developments towards practical free-space quantum cryptography", Proc. SPIE 5815, Quantum Information and Computation III, 176 (June 02, 2005).

Copyright 2005 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

doi: http://dx.doi.org/10.1117/12.605539

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10.1117/12.605539

Developments towards practical free-space quantum cryptography
P. R. Tapster ; P. M. Gorman ; D. M. Benton ; D. M. Taylor and B. S. Lowans, "Developments towards practical free-space quantum cryptography", Proc. SPIE 5815, Quantum Information and Computation III, 176 (June 02, 2005). Copyright 2005 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. doi: http://dx.doi.org/10.1117/12.605539
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Cite this

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abstract = "We describe a free space quantum cryptography system which is designed to allow continuous unattended key exchanges for periods of several days, and over ranges of a few kilometres. The system uses a four-laser faint-pulse transmission system running at a pulse rate of 10MHz to generate the required four alternative polarization states. The receiver module similarly automatically selects a measurement basis and performs polarization measurements with four avalanche photodiodes. The controlling software can implement the full key exchange including sifting, error correction, and privacy amplification required to generate a secure key.",

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Tapster, PR, Gorman, PM, Benton, DM, Taylor, DM & Lowans, BS 2005, Developments towards practical free-space quantum cryptography. in EJ Donkor, AR Pirich & HE Brandt (eds), Quantum information and computation III. SPIE proceedings, vol. 5851, SPIE, pp. 176-179, Quantum Information and Computation III, Orlando, FL, United States, 28/03/05. https://doi.org/10.1117/12.605539

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Developments towards practical free-space quantum cryptography

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