Journal ArticleDOI
Quantum cryptography based on Bell's theorem.
TLDR
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported, based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment andBells theorem is used to test for eavesdropping.Abstract:
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported. The proposed scheme is based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment and Bells theorem is used to test for eavesdropping. © 1991 The American Physical Society.read more
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Journal ArticleDOI
Breaking a quantum key distribution system through a timing side channel.
TL;DR: The security of quantum key distribution relies on the validity of quantum mechanics as a description of nature and on the nonexistence of leaky degrees of freedom in the practical implementations.
Journal ArticleDOI
Faraday-Michelson system for quantum cryptography.
TL;DR: A unidirectional intrinsically stable scheme that is based on Michelson-Faraday interferometers, in which ordinary mirrors are replaced with 90 degree Faraday mirrors is presented, which is to the authors' knowledge the longest reported quantum key distribution experiment under field conditions.
Journal ArticleDOI
Bounds on multipartite entangled orthogonal state discrimination using local operations and classical communication.
TL;DR: It is shown that entanglement guarantees difficulty in the discrimination of orthogonal multipartite states locally and the number of pure states that can be discriminated by local operations and classical communication is bounded by the total dimension over the average entanglements.
Journal ArticleDOI
Simple security analysis of phase-matching measurement-device-independent quantum key distribution
Jie Lin,Norbert Lütkenhaus +1 more
TL;DR: This work obtains an analytical key rate formula for the loss-only scenario, confirming the square root scaling and also showing the loss limit, and simulates the key rate for realistic imperfections and shows that PM-MDI QKD can overcome the repeaterless bound with currently available technology.
Journal ArticleDOI
Experimental quantum key distribution beyond the repeaterless secret key capacity
M. Minder,M. Minder,Mirko Pittaluga,Mirko Pittaluga,George Roberts,George Roberts,Marco Lucamarini,James F. Dynes,Zhiliang Yuan,Andrew J. Shields +9 more
TL;DR: In this paper, the authors proposed a scheme that uses phase-coherent optical signals and an auxiliary measuring station to distribute quantum information over significant channel losses, in excess of 90 dB.