The capacity of a quantum channel for simultaneous transmission of classical and quantum information
Quantum Physics
2007-05-23 v3
Abstract
An expression is derived characterizing the set of admissible rate pairs for simultaneous transmission of classical and quantum information over a given quantum channel, generalizing both the classical and quantum capacities of the channel. Although our formula involves regularization, i.e. taking a limit over many copies of the channel, it reduces to a single-letter expression in the case of generalized dephasing channels. Analogous formulae are conjectured for the simultaneous public-private capacity of a quantum channel and for the simultaneously 1-way distillable common randomness and entanglement of a bipartite quantum state.
Keywords
Cite
@article{arxiv.quant-ph/0311131,
title = {The capacity of a quantum channel for simultaneous transmission of classical and quantum information},
author = {I. Devetak and P. W. Shor},
journal= {arXiv preprint arXiv:quant-ph/0311131},
year = {2007}
}
Comments
16 pages, 3 figures. Presentation improved. "Degradable" spelled correctly