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Entanglement-assisted local transformations between inequivalent classes of three-particle entangled states
Iulia Ghiu, Mohamed Bourennane, Anders Karlsson
We show that bipartite and tripartite entangled states cannot be used as catalysis states to enable local transformations inbetween inequivalent classes of three-particle entangled…
Certainty relations between local and nonlocal observables
R. Garcia Diaz, J. L. Romero, G. Bjork +1
We demonstrate that for an arbitrary number of identical particles, each defined on a Hilbert-space of arbitrary dimension, there exists a whole ladder of relations of complementar…
Single Qubit Quantum Secret Sharing
Christian Schmid, Pavel Trojek, Harald Weinfurter +3
We present a simple and practical protocol for the solution of a secure multiparty communication task, the secret sharing, and its experimental realization. In this protocol, a sec…
Experimental quantum communication complexity
Pavel Trojek, Christian Schmid, Mohamed Bourennane +3
We prove that the fidelity of two exemplary communication complexity protocols, allowing for an N-1 bit communication, can be exponentially improved by N-1 (unentangled) qubit comm…