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
Secure quantum key distribution using continuous variables of single photons.
TL;DR: The information capacity of a scheme based on the spatial entanglement of photons from a realistic source is derived, and the standard measures of security known for quadrature-based continuous variable quantum cryptography (CV-QKD) are shown to be inadequate.
Journal ArticleDOI
Precise quantum tomography of photon pairs with entangled orbital angular momentum
B. Jack,Jonathan Leach,Helmut Ritsch,Stephen M. Barnett,Miles J. Padgett,Sonja Franke-Arnold +5 more
TL;DR: In this article, a high fidelity tomographic reconstruction of the quantum state of photon pairs generated by parametric down-conversion with orbital angular momentum entanglement is reported, with a fidelity in the range between F=0.979 and F= 0.814.
Journal ArticleDOI
Efficient multi-party quantum key agreement by cluster states
Zhiwei Sun,Jianping Yu,Ping Wang +2 more
TL;DR: A quantum key agreement (QKA) protocol by utilizing a four-photon cluster state and the block transmission technique and decoy photons method are used in the presented protocol.
Journal ArticleDOI
Self-testing of quantum systems: a review
Ivan Šupić,Joseph Bowles +1 more
TL;DR: Self-testing is a method to infer the underlying physics of a quantum experiment in a black box scenario as mentioned in this paper, which represents the strongest form of certification for quantum systems, and has been used extensively in other areas of quantum information.
Journal ArticleDOI
Holevo's bound from a general quantum fluctuation theorem
Dvir Kafri,Sebastian Deffner +1 more
TL;DR: In this article, a general formalism of quantum fluctuation theorems for two-time measurements was developed, which explicitly accounts for the back action of quantum measurements as well as possibly nonunitary time evolution.