Secret Keys Assisted Private Classical Communication Capacity over Quantum Channels

Details Secret Keys Assisted Private Classical Communication Capacity over Quantum Channels Secret Keys Assisted Private Classical Communication Capacity over Quantum Channels

2008-06-21

arxiv.org/abs/0806.3525v1

Phys. Rev. A 78, 042306 (2008)

Physics

Quantum Physics

6 pages, 2 figures. Submitted to PRA

Scientific paper

10.1103/PhysRevA.78.042306

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.

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