9905058v3

related topics
{information, entropy, channel}
{alice, bob, state}
{key, protocol, security}
{state, states, entangled}
{state, phys, rev}
{states, state, optimal}

Optimal compression for mixed signal states

Michal Horodecki

abstract: We consider the problem of the optimal compression rate in the case of the source producing mixed signal states within the {\it visible} scheme (where Alice, who is to compress the signal, can know the identities of the produced states). We show that a simple strategy based on replacing the signal states with their {\it extensions} gives {\it optimal} compression. As a result we obtain a considerable simplification of the formula for optimal compression rate within visible scheme.

oai_identifier:
oai:arXiv.org:quant-ph/9905058
categories:
quant-ph
comments:
RevTeX, 5 pages, improvement of the proof (changes in the formula (16))
doi:
10.1103/PhysRevA.61.052309
arxiv_id:
quant-ph/9905058
journal_ref:
Phys. Rev. A, 61, 052309 (2000)
created:
1999-05-19
updated:
2000-08-30

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