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41st Annual Symposium on Foundations of Computer Science
Private quantum channels
Redondo Beach, California
November 12-November 14
ISBN: 0-7695-0850-2
A. Ambainis, California Univ., Berkeley, CA, USA
M. Mosca, California Univ., Berkeley, CA, USA
A. Tapp, California Univ., Berkeley, CA, USA
R. de Wolf, California Univ., Berkeley, CA, USA
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.
Index Terms:
quantum computing; cryptography; private quantum channels; classical private key; insecure one-way quantum channel; private communication; quantum information; qubits; one-time pad encryption scheme
Citation:
A. Ambainis, M. Mosca, A. Tapp, R. de Wolf, "Private quantum channels," focs, pp.547, 41st Annual Symposium on Foundations of Computer Science, 2000
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