Relations for classical communication capacity and entanglement capability of two-qubit operations

Abstract

Bipartite operations underpin both classical communication and entanglement generation. Using a superposition of classical messages, we show that the capacity of a two-qubit operation for error-free entanglement-assisted bidirectional classical communication can not exceed twice the entanglement capability. In addition we show that any bipartite two-qubit operation can increase the communication that may be performed using an ensemble by twice the entanglement capability.

4 pages

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• Optimal Creation of Entanglement Using a Two--Qubit Gate
• Optimal local implementation of non-local quantum gates
• Optimal Remote State Preparation
• The non-local content of quantum operations
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Cited by in corpus (9)

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• Applications of coherent classical communication and the Schur transform to quantum information theory
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• Entanglement capability of self-inverse Hamiltonian evolution
• Relation between classical communication capacity and entanglement capability for two-qubit unitary operations
• All maximally entangling unitary gates
• Entanglement Capacity of Nonlocal Hamiltonians : A Geometric Approach
• Lower bounds for communication capacities of two-qudit unitary operations
• Numerical Analysis of the Capacities for Two-Qubit Unitary Operations