Random-Receiver Quantum Communication
Abstract
We introduce the task of random-receiver quantum communication, in which a sender transmits a quantum message to a receiver chosen from a list of n spatially separated parties. The choice of receiver is unknown to the sender, but is known by the n parties, who coordinate their actions by exchanging classical messages. In normal conditions, random-receiver quantum communication requires a noiseless quantum communication channel from the sender to each of the n receivers. In contrast, we show that random-receiver quantum communication can take place through entanglement-breaking channels if the order of such channels is controlled by a quantum bit that is accessible through quantum measurements. Notably, this phenomenon cannot be mimicked by allowing free quantum communication between the sender and any subset of k<n parties.
Cite
@article{arxiv.2012.15459,
title = {Random-Receiver Quantum Communication},
author = {Some Sankar Bhattacharya and Ananda G. Maity and Tamal Guha and Giulio Chiribella and Manik Banik},
journal= {arXiv preprint arXiv:2012.15459},
year = {2021}
}
Comments
11 pages, 4 figures