Lower bounds for communication capacities of two-qudit unitary operations

Details Lower bounds for communication capacities of two-qudit unitary operations Lower bounds for communication capacities of two-qudit unitary operations

2007-04-17

arxiv.org/abs/0704.2066v1

Physics

Quantum Physics

9 pages, 2 figures, comments welcome

Scientific paper

10.1103/PhysRevA.76.062302

We show that entangling capacities based on the Jamiolkowski isomorphism may be used to place lower bounds on the communication capacities of arbitrary bipartite unitaries. Therefore, for these definitions, the relations which have been previously shown for two-qubit unitaries also hold for arbitrary dimensions. These results are closely related to the theory of the entanglement-assisted capacity of channels. We also present more general methods for producing ensembles for communication from initial states for entanglement creation.

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