Source Compression with a Quantum Helper
arXiv:1501.04366 · doi:10.1109/ISIT.2015.7282959
Abstract
We study classical source coding with quantum side-information where the quantum side-information is observed by a helper and sent to the decoder via a classical channel. We derive a single-letter characterization of the achievable rate region for this problem. The direct part of our result is proved via the measurement compression theory by Winter. Our result reveals that a helper's scheme that separately conducts a measurement and a compression is suboptimal, and the measurement compression is fundamentally needed to achieve the optimal rate region.
5 pages, 2 figures. Version submitted to ISIT 2015
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