Quantum Channel State Masking

• URL: http://arxiv.org/abs/2006.05925v4
• Date: Thu, 7 Jan 2021 13:21:31 GMT
• Title: Quantum Channel State Masking
• Authors: Uzi Pereg, Christian Deppe, and Holger Boche
• Abstract summary: Communication over a quantum channel that depends on a quantum state is considered when the encoder has channel side information (CSI) and is required to mask information on the quantum channel state from the decoder. A full characterization is established for the entanglement-assisted masking equivocation region, and a regularized formula is given for the quantum capacity-leakage function without assistance.
• Score: 78.7611537027573
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Communication over a quantum channel that depends on a quantum state is considered when the encoder has channel side information (CSI) and is required to mask information on the quantum channel state from the decoder. A full characterization is established for the entanglement-assisted masking equivocation region, and a regularized formula is given for the quantum capacity-leakage function without assistance. For Hadamard channels without assistance, we derive single-letter inner and outer bounds, which coincide in the standard case of a channel that does not depend on a state.

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