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12 papers · 2 filters
Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
Charles H. Bennett, Gilles Brassard, Sandu Popescu +3
Two separated observers, by applying local operations to a supply of not-too-impure entangled states ({\em e.g.} singlets shared through a noisy channel), can prepare a smaller num…
Concentrating Partial Entanglement by Local Operations
Charles H. Bennett, Herbert J. Bernstein, Sandu Popescu +1
If two separated observers are supplied with entanglement, in the form of pairs of particles in identical partly-entangled pure states, one member of each pair being given to e…
Aharonov-Bohm Type Forces Between Magnetic Fluxons
Y. Aharonov, S. Nussinov, S. Popescu +1
Forces related to A-B phases between fluxons with are discussed. We find a type interaction screened on a scale . The forces exist on…
Jamming non-local quantum correlations
J. Grunhaus, S. Popescu, D. Rohrlich
We present a possible scheme to tamper with non-local quantum correlations in a way that is consistent with relativistic causality, but goes beyond quantum mechanics. A non-local `…
Quantum Cryptography Based on Orthogonal States
Lior Goldenberg, Lev Vaidman
All existing quantum cryptosystems use non-orthogonal states as the carriers of information. Non-orthogonal states cannot be cloned (duplicated) by an eavesdropper. In result, any…
INTRINSIC MECHANISM FOR ENTROPY CHANGE IN CLASSICAL AND QUANTUM EVOLUTION
Eli Eisenberg, Larry Horwitz
It is shown that the existence of a time operator in the Liouville space representation of both classical and quantum evolution provides a mechanism for effective entropy change of…