One-Shot Hybrid State Redistribution

TL;DR

This paper introduces a theoretical framework for one-shot hybrid state redistribution involving classical and quantum information, deriving bounds and coding theorems for resource-efficient communication.

Contribution

It provides the first one-shot bounds and systematic coding theorems for hybrid classical-quantum state redistribution with side information.

Findings

Derived one-shot bounds for classical and quantum resources

Unified coding theorems for various two-party source coding problems

Extended results to address previously unstudied scenarios

Abstract

We consider state redistribution of a "hybrid" information source that has both classical and quantum components. The sender transmits classical and quantum information at the same time to the receiver, in the presence of classical and quantum side information both at the sender and at the decoder. The available resources are shared entanglement, and noiseless classical and quantum communication channels. We derive one-shot direct and converse bounds for these three resources, represented in terms of the smooth conditional entropies of the source state. Various coding theorems for two-party source coding problems are systematically obtained by reduction from our results, including the ones that have not been addressed in previous literature.