منابع مشابه
Differential Phase Shift Quantum Key Distribution
A novel quantum cryptography scheme is proposed, in which a single photon is prepared in a linear superposition state of three basis kets. A photon split to three pulses is sent from Alice to Bob, where the phase difference between sequential two pulses carries bit information. Bob measures the phase difference by passive differential phase detection. This scheme is suitable for fiber transmiss...
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Chi-Hang Fred Fung, ∗ Bing Qi, † Kiyoshi Tamaki, ‡ and Hoi-Kwong Lo § Center for Quantum Information and Quantum Control, Department of Electrical & Computer Engineering and Department of Physics, University of Toronto, Toronto, Ontario, Canada NTT Basic Research Laboratories, NTT corporation, 3-1,Morinosato Wakamiya Atsugi-Shi, Kanagawa, 243-0198; CREST, JST Agency, 4-1-8 Honcho, Kawaguchi, Sa...
متن کاملQuantum key distribution based on phase encoding and polarization measurement.
A one-way quantum key distribution scheme based on intrinsically stable Faraday-mirror-type Michelson interferometers with four-port polarizing beam splitters has been demonstrated that can compensate for birefringence effects automatically. The encoding is performed with phase modulators, but decoding is accomplished through measurement of the polarization state of Bob's photons. An extinction...
متن کاملSecurity of distributed-phase-reference quantum key distribution.
Distributed-phase-reference quantum key distribution stands out for its easy implementation with present day technology. For many years, a full security proof of these schemes in a realistic setting has been elusive. We solve this long-standing problem and present a generic method to prove the security of such protocols against general attacks. To illustrate our result, we provide lower bounds ...
متن کاملPractical round-robin differential phase-shift quantum key distribution.
Recently, a novel protocol named round-robin differential phase-shift (RRDPS) quantum key distribution [Nature 509, 475(2014)] has been proposed. It can estimate information leakage without monitoring bit error rate. In this paper, we study the performance of RRDPS using heralded single photon source (HSPS) without and with decoy-state method, then compare it with the performance of weak cohere...
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ژورنال
عنوان ژورنال: Physical Review X
سال: 2018
ISSN: 2160-3308
DOI: 10.1103/physrevx.8.031043