Private classical communication over quantum multiple-access channels
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.
Description
Click on the DOI link to access this conference paper at the publishers website (may not be free).