Capacities of Quantum Erasure Channels

Details Capacities of Quantum Erasure Channels Capacities of Quantum Erasure Channels

1997-01-14

arxiv.org/abs/quant-ph/9701015v2

Phys.Rev.Lett.78:3217-3220,1997

Physics

Quantum Physics

4 pages, RevTeX, epsf macros to include 2 eps figures. See also http://vesta.physics.ucla.edu/~smolin/ Version 2, submitted to

Scientific paper

10.1103/PhysRevLett.78.3217

The quantum analog of the classical erasure channel provides a simple example of a channel whose asymptotic capacity for faithful transmission of intact quantum states, with and without the assistance of a two-way classical side channel, can be computed exactly. We derive the quantum and classical capacities for the quantum erasure channel and related channels, and compare them to the depolarizing channel, for which only upper and lower bounds on the capacities are known.

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