Zigzag approach to higher key rate of sending-or-not-sending twin field quantum key distribution with finite-key effects
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چکیده
منابع مشابه
Finite-key analysis for practical implementations of quantum key distribution
The lists of bits processed in quantum key distribution are necessarily of finite length. The need for finite-key unconditional security bounds was recognized long ago, but the theoretical tools have become available only very recently. We provide finite-key unconditional security bounds for two practical implementations of the Bennett–Brassard 1984 coding: prepareand-measure implementations wi...
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Quantum key distribution promises unconditionally secure communications. However, as practical devices tend to deviate from their specifications, the security of some practical systems is no longer valid. In particular, an adversary can exploit imperfect detectors to learn a large part of the secret key, even though the security proof claims otherwise. Recently, a practical approach--measuremen...
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We study a general quantum key distribution protocol in higher dimension. In this protocol, quantum states in arbit...
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The security of the previous quantum key distribution (QKD) protocols, which is guaranteed by the nature of physics law, is based on the legitimate users. However, impersonation of the legitimate communicators by eavesdroppers, in practice, will be inevitable. In fact, the previous QKD protocols is un secure without authentication in practical communication. In this paper, we proposed an improv...
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Quantum Cryptography guarantees absolute confidentiality for secret key exchanged via an optical fiber. The ability lies in the possibility of distributing the secret key securely in the form of photon. We show that there are different values of optimal mean photon number (^) based on which assumption is considered for Eve's technology. For lower optimal fi such as p=0. / and ^=0.4, the system ...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2020
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ab81b7