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Private quantum channels

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4 Author(s)
Ambainis, A. ; California Univ., Berkeley, CA, USA ; Mosca, M. ; Tapp, A. ; De Wolf, R.

We investigate how a classical private key can be used by two players, connected by an insecure one-way quantum channel, to perform private communication of quantum information. In particular, we show that in order to transmit n qubits privately, 2n bits of shared private key are necessary and sufficient. This result may be viewed as the quantum analogue of the classical one-time pad encryption scheme

Published in:

Foundations of Computer Science, 2000. Proceedings. 41st Annual Symposium on

Date of Conference:

2000

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