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
Quantum secure direct dialogue using Einstein-Podolsky-Rosen pairs
TL;DR: A two-step quantum secure direct dialogue protocol using Einstein-Podolsky-Rosen (EPR) pair block is proposed, which is a direct communication protocol that does not require a separate classical communication for the ciphertext.
Journal ArticleDOI
Efficient quantum key distribution secure against no-signalling eavesdroppers
TL;DR: A family of quantum key distribution protocols of this type, which are more efficient than previous ones, both in terms of key rate and noise resistance, and Interestingly, the best protocols involve large number of measurements.
Journal ArticleDOI
Experimental decoy-state quantum key distribution with a sub-poissionian heralded single-photon source.
Qin Wang,Wei Chen,Guilherme B. Xavier,Marcin Swillo,Tao Zhang,Sebastien Sauge,Maria Tengner,Zheng-Fu Han,Guang-Can Guo,Anders Karlsson +9 more
TL;DR: A one-way Bennett-Brassard 1984 protocol with a four states and one-detector phase-coding scheme, immune to recently proposed time-shift attacks, photon-number splitting attacks, and can also be proven to be secure against Trojan horse attacks and any other standard individual or coherent attacks.
Posted Content
Capacities of repeater-assisted quantum communications
TL;DR: This work derives single-letter upper bounds for the end-to-end capacities in repeater chains and quantum networks connected by arbitrary quantum channels, establishing exact formulas under basic decoherence models, including bosonic lossy channels, quantum-limited amplifiers, dephasing and erasure channels.
Posted Content
The Structure of Bipartite Quantum States - Insights from Group Theory and Cryptography
TL;DR: In this paper, the structure of bipartite quantum states is studied and a new entanglement measure called ''squashed entanglements'' is introduced. But the focus of the paper is on the structure and structure of quantum states.