Private Quantum Channels

  title={Private Quantum Channels},
  author={Andris Ambainis and Michele Mosca and Alain Tapp and Ronald de Wolf},
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… CONTINUE READING



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