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Title: Quantum key distribution with finite resources: Secret key rates via Renyi entropies

Abstract

A realistic quantum key distribution (QKD) protocol necessarily deals with finite resources, such as the number of signals exchanged by the two parties. We derive a bound on the secret key rate which is expressed as an optimization problem over Renyi entropies. Under the assumption of collective attacks by an eavesdropper, a computable estimate of our bound for the six-state protocol is provided. This bound leads to improved key rates in comparison to previous results.

Authors:
; ; ;  [1]
  1. Institute for Theoretical Physics III, Heinrich-Heine-universitaet Duesseldorf, D-40225 Duesseldorf (Germany)
Publication Date:
OSTI Identifier:
22068666
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; DISTRIBUTION; ENTROPY; OPTIMIZATION; QUANTUM MECHANICS; SIGNALS

Citation Formats

Abruzzo, Silvestre, Kampermann, Hermann, Mertz, Markus, and Bruss, Dagmar. Quantum key distribution with finite resources: Secret key rates via Renyi entropies. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.032321.
Abruzzo, Silvestre, Kampermann, Hermann, Mertz, Markus, & Bruss, Dagmar. Quantum key distribution with finite resources: Secret key rates via Renyi entropies. United States. doi:10.1103/PHYSREVA.84.032321.
Abruzzo, Silvestre, Kampermann, Hermann, Mertz, Markus, and Bruss, Dagmar. Thu . "Quantum key distribution with finite resources: Secret key rates via Renyi entropies". United States. doi:10.1103/PHYSREVA.84.032321.
@article{osti_22068666,
title = {Quantum key distribution with finite resources: Secret key rates via Renyi entropies},
author = {Abruzzo, Silvestre and Kampermann, Hermann and Mertz, Markus and Bruss, Dagmar},
abstractNote = {A realistic quantum key distribution (QKD) protocol necessarily deals with finite resources, such as the number of signals exchanged by the two parties. We derive a bound on the secret key rate which is expressed as an optimization problem over Renyi entropies. Under the assumption of collective attacks by an eavesdropper, a computable estimate of our bound for the six-state protocol is provided. This bound leads to improved key rates in comparison to previous results.},
doi = {10.1103/PHYSREVA.84.032321},
journal = {Physical Review. A},
issn = {1050-2947},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}