Remote information concentration using a bound entangled state.
Remote information concentration, the reverse process of quantum telecloning, is presented. In this scheme, quantum information originally from a single qubit, but now distributed into three spatially separated qubits, is remotely concentrated back to a single qubit via an initially shared entangled state without performing any global operations. This entangled state is a single unlockable bound entangled state and we analyze its properties.
Murao
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Semiconductors Laboratory, THe Institute of Physical and Chemical Research, Wako-shi, Japan.
Vedral
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