Universal superposition codes: capacity regions of compound quantum broadcast channel with confidential messages

Abstract

We derive universal codes for transmission of broadcast and confidential messages over classical-quantum-quantum and fully quantum channels. These codes are robust to channel uncertainties considered in the compound model. To construct these codes we generalize random codes for transmission of public messages, to derive a universal superposition coding for the compound quantum broadcast channel. As an application, we give a multi-letter characterization of regions corresponding to the capacity of the compound quantum broadcast channel for transmitting broadcast and confidential messages simultaneously. This is done for two types of broadcast messages, one called public and the other common.

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Cited by in corpus (4)

• Quantum Broadcast Channels with Cooperating Decoders: An Information-Theoretic Perspective on Quantum Repeaters
• Universal classical-quantum superposition coding and universal classical-quantum multiple access channel coding
• The Quantum Multiple-Access Channel with Cribbing Encoders
• Classical State Masking over a Quantum Channel