Secret Keys Assisted Private Classical Communication Capacity over Quantum Channels

Abstract

We prove a regularized formula for the secret key-assisted capacity region of a quantum channel for transmitting private classical information. This result parallels the work of Devetak on entanglement assisted quantum communication capacity \cite{DHW05RI}. This formula provides a new family protocol, the private father protocol, under the resource inequality framework that includes private classical communication \it{without} secret key assistance as a child protocol.

6 pages, 2 figures. Submitted to PRA

References in corpus (4)

• Coding Theorem and Strong Converse for Quantum Channels
• The mother of all protocols: Restructuring quantum information's family tree
• Relating quantum privacy and quantum coherence: an operational approach
• Channel simulation with quantum side information

Cited by in corpus (7)

• Entanglement-assisted communication of classical and quantum information
• Trade-off capacities of the quantum Hadamard channels
• Trading classical communication, quantum communication, and entanglement in quantum Shannon theory
• Public and private resource trade-offs for a quantum channel
• Public and private communication with a quantum channel and a secret key
• Universal coding for transmission of private information
• Classical State Masking over a Quantum Channel