On entanglement capabilities in infinite dimensions or multi-dimensional entangled coherent states

Abstract

An example is given of an interaction that produces an infinite amount of entanglement in an infinitely short time, but only a finite amount in longer times. The interaction arises from a standard Kerr nonlinearity and a 50/50 beamsplitter, and the initial state is a coherent state. For certain finite interaction times multi-dimensional generalizations of entangled coherent states are generated, for which we construct a teleportation protocol. Similarities between probabilistic teleportation and unambiguous state discrimination are pointed out.

4 pages ReVTeX, 1 figure. Added a proof, plus a reference, plus an acknowledgement, minus a typo

References in corpus (1)

• Unambiguous State Discrimination of Coherent States with Linear Optics: Application to Quantum Cryptography

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