Classical State Masking over a Quantum Channel

TL;DR

This paper investigates how to securely transmit classical information over quantum channels with state-dependent noise, focusing on masking channel state information from the receiver, and provides theoretical formulas for the achievable masking regions.

Contribution

It introduces a regularized formula for the masking equivocation region and fully characterizes this region for certain measurement channels in quantum communication.

Findings

Derived a regularized formula for masking equivocation region.

Established a full characterization for a class of measurement channels.

Highlights the importance of concealing channel state information in quantum communication.

Abstract

Transmission of classical information over a quantum state-dependent channel is considered, when the encoder can measure channel side information (CSI) and is required to mask information on the quantum channel state from the decoder. In this quantum setting, it is essential to conceal the CSI measurement as well. A regularized formula is derived for the masking equivocation region, and a full characterization is established for a class of measurement channels.