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Capacities of Quantum Erasure Channels

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arxiv quant-ph/9701015 v2 pith:ZQKLUBG4 submitted 1997-01-14 quant-ph

classification quant-ph
keywords channelquantumcapacitiesclassicalerasurechannelsanalogassistance
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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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  1. Rethinking quantum information in gravity and fields

    hep-th 2026-06 unverdicted novelty 2.0 of 10

    The paper organizes important open questions in quantum gravity and quantum information into four themes without presenting new results or derivations.

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