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The role of squeezing in quantum key distribution based on homodyne detection and post-selection

The role of squeezing in quantum key distribution based on homodyne detection and post-selection
The role of squeezing in quantum key distribution based on homodyne detection and post-selection
The role of squeezing in quantum key distribution with continuous variables based on homodyne detection and post-selection is investigated for several specific eavesdropping attacks. It is shown that amplitude squeezing creates strong correlations between the signals of the legitimate receiver and a potential eavesdropper. Post-selection of the received pulses can therefore be used to reduce the eavesdropper's knowledge of the raw key, which increases the secret key rate by orders of magnitude over large distances even for modest amounts of squeezing.
0950-0340
1249-1264
Horak, P.
520489b5-ccc7-4d29-bb30-c1e36436ea03
Horak, P.
520489b5-ccc7-4d29-bb30-c1e36436ea03

Horak, P. (2004) The role of squeezing in quantum key distribution based on homodyne detection and post-selection. Journal of Modern Optics, 51 (8), 1249-1264. (doi:10.1080/09500340410001648474).

Record type: Article

Abstract

The role of squeezing in quantum key distribution with continuous variables based on homodyne detection and post-selection is investigated for several specific eavesdropping attacks. It is shown that amplitude squeezing creates strong correlations between the signals of the legitimate receiver and a potential eavesdropper. Post-selection of the received pulses can therefore be used to reduce the eavesdropper's knowledge of the raw key, which increases the secret key rate by orders of magnitude over large distances even for modest amounts of squeezing.

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Published date: 2004

Identifiers

Local EPrints ID: 13935
URI: http://eprints.soton.ac.uk/id/eprint/13935
ISSN: 0950-0340
PURE UUID: fd871d0d-d6b5-44d8-81fd-f9c746d96e05
ORCID for P. Horak: ORCID iD orcid.org/0000-0002-8710-8764

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Date deposited: 19 Jan 2005
Last modified: 18 Feb 2021 16:59

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Author: P. Horak ORCID iD

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