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 DHW05RI. This formula provides a new family protocol, the private father protocol, under the resource inequality framework that includes private classical communication without secret key assistance as a child protocol.
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