Publication: Security of quantum key distribution with detection-efficiency mismatch in the single-photon case: Tight bounds
Дата
2019
Авторы
Bochkov, M. K.
Trushechkin, A. S.
Journal Title
Journal ISSN
Volume Title
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Аннотация
One of the challenges in practical quantum key distribution is dealing with efficiency mismatch between different threshold single-photon detectors. There are known bounds for the secret key rate for the BB84 protocol with detection-efficiency mismatch provided that the eavesdropper sends no more than one photon to the legitimate receiver. Here we improve these bounds and give tight bounds for the secret key rate with a constant detection-efficiency mismatch under the same single-photon assumption. We propose a method based on the analytical minimization of the relative entropy of coherence, which can be used in other problems in quantum key distribution. Also we propose an adaptation of the decoy state method to prove the security in the case of weak coherent pulses on the source side.
Описание
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Цитирование
Bochkov, M. K. Security of quantum key distribution with detection-efficiency mismatch in the single-photon case: Tight bounds / Bochkov, MK, Trushechkin, AS // Physical Review A. - 2019. - 99. - № 3. - 10.1103/PhysRevA.99.032308
URI
https://www.doi.org/10.1103/PhysRevA.99.032308
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https://openrepository.mephi.ru/handle/123456789/16638
https://www.scopus.com/record/display.uri?eid=2-s2.0-85062872392&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000460648100003
https://openrepository.mephi.ru/handle/123456789/16638