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Quantum cryptography with squeezed light and post-selection

Quantum cryptography with squeezed light and post-selection
Quantum cryptography with squeezed light and post-selection
The role of squeezing and post-selection in continuous variable quantum key distribution is investigated. The scheme is based on the transmission of weak, amplitude-squeezed pulses of light in four discrete quantum states. It is shown that 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. This increases the secret bit rate by orders of magnitude over large distances even for modest amounts of squeezing. (This is similar to paper number eP13935 which is available below.)
Horak, P.
520489b5-ccc7-4d29-bb30-c1e36436ea03
Horak, P.
520489b5-ccc7-4d29-bb30-c1e36436ea03

Horak, P. (2004) Quantum cryptography with squeezed light and post-selection. Continuous Variables Quantum Information Processing (CVQIP 04): Workshop 2004, Veilbronn, Germany. 01 - 04 Apr 2004. 15 pp .

Record type: Conference or Workshop Item (Other)

Abstract

The role of squeezing and post-selection in continuous variable quantum key distribution is investigated. The scheme is based on the transmission of weak, amplitude-squeezed pulses of light in four discrete quantum states. It is shown that 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. This increases the secret bit rate by orders of magnitude over large distances even for modest amounts of squeezing. (This is similar to paper number eP13935 which is available below.)

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Published date: 2004
Venue - Dates: Continuous Variables Quantum Information Processing (CVQIP 04): Workshop 2004, Veilbronn, Germany, 2004-04-01 - 2004-04-04

Identifiers

Local EPrints ID: 41728
URI: http://eprints.soton.ac.uk/id/eprint/41728
PURE UUID: 1a568453-cde6-45db-b291-42bb28c2afb6
ORCID for P. Horak: ORCID iD orcid.org/0000-0002-8710-8764

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Date deposited: 16 Oct 2006
Last modified: 18 Feb 2021 16:59

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Author: P. Horak ORCID iD

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