Private classical communication over quantum multiple-access channels
Chou, Rémi
Chou, Rémi
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Issue Date
2021-07-12
Type
Conference paper
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Keywords
Privacy,Transmitters,Source coding,Quantum mechanics,Receivers,Reliability,Quantum communication
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Citation
Chou, R. A. (2021). Private classical communication over quantum multiple-access channels. Paper presented at the IEEE International Symposium on Information Theory - Proceedings, , 2021-July 617-622. doi:10.1109/ISIT45174.2021.9517802
Abstract
We study private classical communication over quantum multiple-access channels. For an arbitrary number of transmitters, we derive a regularized expression of the capacity region. In the case of degradable channels, we establish a single-letter expression for the best achievable sum-rate and prove that this quantity also corresponds to the best achievable sum-rate for quantum communication over degradable quantum multiple-access channels. Our achievability result decouples the reliability and privacy constraints, which are handled via distributed source coding with quantum side information at the receiver and distributed hashing, respectively. As a by-product of independent interest, we derive a distributed leftover hash lemma against quantum side information that ensures privacy in our achievability result.
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Publisher
IEEE
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Series
2021 IEEE International Symposium on Information Theory (ISIT);