Source compression with a quantum helper

Publication Type:
Conference Proceeding
Citation:
IEEE International Symposium on Information Theory - Proceedings, 2015, 2015-June pp. 2762 - 2766
Issue Date:
2015-09-28
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© 2015 IEEE. 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.
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