Public and private communication with a quantum channel and a secret key

Publisher:
American Physical Society
Publication Type:
Journal article
Citation:
Hsieh, Min-Hsiu and Wilde, Mark 2009, 'Public and private communication with a quantum channel and a secret key', Physical Review A, vol. 80, no. 2, pp. 022306-1-022306-15.
Issue Date:
2009
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We consider using a secret key and a noisy quantum channel to generate noiseless public communication and noiseless private communication. The optimal protocol for this setting is the publicly-enhanced private father protocol. This protocol exploits random coding techniques and "piggybacking" of public information along with secret-key-assisted private codes. The publicly-enhanced private father protocol is a generalization of the secret-key-assisted protocol of Hsieh, Luo, and Brun and a generelization of a protocol for simultaneous communication of public and private information suggested by Devetak and Shor.
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