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On the Disentanglement of States
Tal Mor
Disentanglement is the process which transforms a state of two subsystems into an unentangled state, while not effecting the reduced density matrices of each of the two subsyst…
Unextendible Product Bases and Bound Entanglement
C. H. Bennett, D. P. DiVincenzo, T. Mor +3
An unextendible product basis (UPB) for a multipartite quantum system is an incomplete orthogonal product basis whose complementary subspace contains no product state. We give exam…
Quantum Nonlocality without Entanglement
Charles H. Bennett, David P. DiVincenzo, Christopher A. Fuchs +5
We exhibit an orthogonal set of product states of two three-state particles that nevertheless cannot be reliably distinguished by a pair of separated observers ignorant of which of…
No-cloning of Orthogonal States in Composite Systems
Tal Mor
The no-cloning principle tells us that non-orthogonal quantum states cannot be cloned, but it does not tell us that orthogonal states can always be cloned. We suggest a situation w…
Security of Quantum Key Distribution Against All Collective Attacks
Eli Biham, Michel Boyer, Gilles Brassard +2
Security of quantum key distribution against sophisticated attacks is among the most important issues in quantum information theory. In this work we prove security against a very i…