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  Quantum Key Distribution with Multi Letter Continuous Variable Alphabets

Sych, D., & Leuchs, G. (2009). Quantum Key Distribution with Multi Letter Continuous Variable Alphabets. In QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING (QCMC) (pp. 347-350). 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA: AMER INST PHYSICS.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-6C3D-0 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-6C3E-E
Genre: Conference Paper

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 Creators:
Sych, Denis1, Author           
Leuchs, Gerd2, Author           
Affiliations:
1Optics Theory Group, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364706              
2Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364698              

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Free keywords: CRYPTOGRAPHY; COMMUNICATION; STATESPhysics; quantum cryptography; quantum key distribution; qkd; continuous variable; coherent states; multi letter alphabet;
 Abstract: We present a new protocol for continuous variable quantum key distribution. The novelty of the protocol is a multi letter alphabet represented by coherent states of light with a fixed amplitude and variable phase. Information is encoded in the phase of a coherent state which can be chosen from a regular discrete set consisting, however, of an arbitrary number of letters. We evaluate the security of the protocol against the beam splitting attack. As a result we show the proposed protocol has advantages over the standard two letter coherent state protocol, especially in the case when losses in the communication channel are low.

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Language(s): eng - English
 Dates: 2009
 Publication Status: Issued
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000267050900078
 Degree: -

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Title: 9th International Conference on Quantum Communication, Measurement and Computing
Place of Event: Calgary, CANADA
Start-/End Date: 2008-08-19 - 2008-08-24

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Title: QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING (QCMC)
  Alternative Title : AIP CONF PROC
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA : AMER INST PHYSICS
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 347 - 350 Identifier: ISSN: 0094-243X
ISBN: 978-0-7354-0647-6

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Title: AIP Conference Proceedings
  Alternative Title : AIP CONF PROC
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: 1110 Sequence Number: - Start / End Page: - Identifier: ISSN: 0094-243X