M Koashi 2009 New J. Phys. 11 045018 doi:10.1088/1367-2630/11/4/045018
Simple security proof of quantum key distribution based on complementarity
Quantum Cryptography: Theory and PracticeM Koashi1,2
Show affiliationsPart of Quantum Cryptography: Theory and Practice
We present an approach to the unconditional security of quantum key distribution protocols based on a complementarity argument. The approach is applicable to, but not limited to, every case that has been treated via the argument by Shor and Preskill based on entanglement distillation, with a benefit of decoupling of the error correction from the privacy amplification. It can also treat cases with uncharacterized apparatuses. We derive a secure key rate for the Bennett–Brassard-1984 protocol with an arbitrary source characterized only by a single parameter representing the basis dependence.
- PACS
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03.67.Dd Quantum cryptography and communication security
03.65.Ta Foundations of quantum mechanics; measurement theory
- Subjects
- Dates
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Issue 4 (April 2009)
Received 30 November 2008
Published 30 April 2009
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Simple security proof of quantum key distribution based on complementarity
M Koashi 2009 New J. Phys. 11 045018
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