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 key distribution over a 48 km optical fibre network
TL;DR: In this article, the authors developed experimental quantum cryptography systems based on the transmission of non-orthogonal photon states to generate shared key material over multikilometre optical fibre paths and over line-of-sight links.
Journal ArticleDOI
Method for direct detection of quantum entanglement.
Paweł Horodecki,Artur Ekert +1 more
TL;DR: This work views this method as a new form of quantum computation, namely, as a decision problem with quantum data structure, which provides a sharp separability test and estimation of amount of entanglement for two qubits.
Journal ArticleDOI
Protocol for direct counterfactual quantum communication.
TL;DR: Using the "chained" quantum Zeno effect, this work shows how, in the ideal asymptotic limit, information can be transferred between Alice and Bob without any physical particles traveling between them.
Journal ArticleDOI
Phase-remapping attack in practical quantum-key-distribution systems
TL;DR: A phase-remapping attack targeting two practical bidirectional QKD systems showing that if the users of the systems are unaware of the attack, the final key shared between them can be compromised in some situations, and that the attack is feasible with only current technology.
Journal ArticleDOI
Bell inequalities and entanglement in solid-state devices
TL;DR: In this article, a solid-state device producing pairs of entangled electrons, a superconductor emitting Cooper pairs properly split into the two arms of a normal-metallic fork with the help of appropriate filters, was studied.