Continuous variable quantum key distribution: Finite-key analysis of composable security against coherent attacks

Furrer, F; Franz, T; Berta, M; Leverrier, A; Scholz, VB; Tomamichel, M; Werner, RF

Continuous variable quantum key distribution: Finite-key analysis of composable security against coherent attacks

Furrer, F Franz, T Berta, M Leverrier, A Scholz, VB Tomamichel, M

Werner, RF

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Publication Type:: Journal Article
Citation:: Physical Review Letters, 2012, 109 (10)
Issue Date:: 2012-09-05

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Field	Value	Language
dc.contributor.author	Furrer, F	en_US
dc.contributor.author	Franz, T	en_US
dc.contributor.author	Berta, M	en_US
dc.contributor.author	Leverrier, A	en_US
dc.contributor.author	Scholz, VB	en_US
dc.contributor.author	Tomamichel, M https://orcid.org/0000-0001-5410-3329	en_US
dc.contributor.author	Werner, RF	en_US
dc.date.issued	2012-09-05	en_US
dc.identifier.citation	Physical Review Letters, 2012, 109 (10)	en_US
dc.identifier.issn	0031-9007	en_US
dc.identifier.uri	http://hdl.handle.net/10453/115407
dc.description.abstract	We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of two-mode squeezed vacuum states measured via homodyne detection. We employ a version of the entropic uncertainty relation for smooth entropies to give a lower bound on the number of secret bits which can be extracted from a finite number of runs of the protocol. This bound is valid under general coherent attacks, and gives rise to keys which are composably secure. For comparison, we also give a lower bound valid under the assumption of collective attacks. For both scenarios, we find positive key rates using experimental parameters reachable today. © 2012 American Physical Society.	en_US
dc.relation.ispartof	Physical Review Letters	en_US
dc.relation.isbasedon	10.1103/PhysRevLett.109.100502	en_US
dc.subject.classification	General Physics	en_US
dc.title	Continuous variable quantum key distribution: Finite-key analysis of composable security against coherent attacks	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	109	en_US
utslib.for	020603 Quantum Information, Computation and Communication	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Computer Science
pubs.organisational-group	/University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
utslib.copyright.status	open_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	109	en_US

Abstract:

We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of two-mode squeezed vacuum states measured via homodyne detection. We employ a version of the entropic uncertainty relation for smooth entropies to give a lower bound on the number of secret bits which can be extracted from a finite number of runs of the protocol. This bound is valid under general coherent attacks, and gives rise to keys which are composably secure. For comparison, we also give a lower bound valid under the assumption of collective attacks. For both scenarios, we find positive key rates using experimental parameters reachable today. © 2012 American Physical Society.

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http://hdl.handle.net/10453/115407