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Security of quantum key distribution with imperfect devices

Gottesman, D., Lo, H.-K., L\"utkenhaus, N., Preskill, J.·2004·Quantum Information and Computation

Abstract

We prove the security of the Bennett-Brassard (BB84) quantum key distribution protocol in the case where the source and detector are under the limited control of an adversary. Our proof applies when both the source and the detector have small basis-dependent flaws, as is typical in practical implementations of the protocol. We derive a general lower bound on the asymptotic key generation rate for weakly basis-dependent eavesdropping attacks, and also estimate the rate in some special cases: sources that emit weak coherent states with random phases, detectors with basis-dependent efficiency, and misaligned sources and detectors.

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Metadata

Authors
Gottesman, D., Lo, H.-K., L\"utkenhaus, N., & Preskill, J.
Venue
Quantum Information and Computation
Publisher
Rinton Press
Published
2004-09
Volume
4
Issue
5
Pages
325-360
ISSN
1533-7146 (ISSN-L)
OpenAlex
W1585033983
Cited by
682
References
5
FWCI
24.74
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Security of quantum key distribution with imperfect devices. https://app.cochat.ai/papers/10.26421/qic4.5-1
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Gottesman, D., Lo, H.-K., L\"utkenhaus, N., & Preskill, J. (2004). Security of quantum key distribution with imperfect devices. Quantum Information and Computation. https://doi.org/10.26421/qic4.5-1

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