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 cryptography based on quantum dots
S. N. Molotkov,S. S. Nazin +1 more
TL;DR: Network protocols are formulated for the phase-coding and correlated-photon-pairs quantum cryptosystems that are free of the restriction imposed on the distance between the two legitimate users by the transmission loss in the optical fiber.
Journal ArticleDOI
Quantum cryptography with highly entangled photons from semiconductor quantum dots.
Christian Schimpf,Marcus Reindl,Daniel Huber,Barbara Lehner,Saimon Filipe Covre da Silva,Santanu Manna,Michal Vyvlecka,Philip Walther,Armando Rastelli +8 more
TL;DR: In this article, the authors implemented a quantum key distribution with an average quantum bit error rate as low as 1.9% over a time span of 13 hours using a quantum dot source with a fidelity as high as 0.987(8).
Journal ArticleDOI
Measure-Resend Semi-Quantum Private Comparison Without Entanglement
Tian-Yu Ye,Chong-Qiang Ye +1 more
TL;DR: Compared with the previous SQPC protocols, the advantage of this protocol lies in that it only employs two-particle product states as the initial prepared quantum resource, only requires TP to perform single-photon measurements and does not need quantum entanglement swapping.
Journal ArticleDOI
Conditional q-entropies and quantum separability: a numerical exploration
TL;DR: In this article, the authors revisited the relationship between quantum separability and the sign of the relative q-entropies of composite quantum systems and performed a systematic numerical survey of the space of mixed states of two-qubit systems in order to determine, as a function of the degree of mixture, and for different values of the entropic parameter q, the volume in state space occupied by those states characterized by positive values of relative entropy.
Posted Content
Quantum key distribution with entangled photons generated on-demand by a quantum dot
Francesco Basso Basset,Mauro Valeri,Emanuele Roccia,Valerio Muredda,Davide Poderini,Julia Neuwirth,Nicolò Spagnolo,Michele B. Rota,Gonzalo Carvacho,Fabio Sciarrino,Rinaldo Trotta +10 more
TL;DR: This field study highlights that quantum-dot entangled photon sources are ready to go beyond laboratory experiments, thus opening the way to real-life quantum communication.