Optimal compression for mixed signal states

Details Optimal compression for mixed signal states Optimal compression for mixed signal states

1999-05-19

arxiv.org/abs/quant-ph/9905058v3

Phys. Rev. A, 61, 052309 (2000)

Physics

Quantum Physics

RevTeX, 5 pages, improvement of the proof (changes in the formula (16))

Scientific paper

10.1103/PhysRevA.61.052309

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.

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