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Private quantum channels

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Proceedings 41st Annual Symposium on Foundations of Computer Science
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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. Introduction Secure transmission of classical information is a well studied topic. Suppose

doi:10.1109/sfcs.2000.892142
dblp:conf/focs/AmbainisMTW00
fatcat:zjtd36sm4bhsbhdaw232ykwd2q