Secret keys assisted private classical communication capacity over quantum channels

Publisher:
AMER PHYSICAL SOC
Publication Type:
Conference Proceeding
Citation:
Physical Review A - Atomic, Molecular, and Optical Physics, 2008, 78, (4)
Issue Date:
2008-01
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0806.3525v1.pdf170.23 kB
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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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