Error free quantum communication through noisy channels

Details Error free quantum communication through noisy channels Error free quantum communication through noisy channels

1998-10-14

arxiv.org/abs/quant-ph/9810042v1

Phys. Rev. A, vol 58, 2745 (1998)

Physics

Quantum Physics

6 pages, including 2 figures

Scientific paper

10.1103/PhysRevA.58.2745

We suggest a method to perform a quantum logic gate between distant qubits by off-resonant field-atom dispersive interactions. The scheme we present is shown to work ideally even in the presence of errors in the photon channels used for communication. The stability against errors arises from the paradoxical situation that the transmitted photons carry no information about the state of the qubits. In contrast to a previous proposal for ideal communication [Phys. Rev. Lett. 78, 4293 (1997)] our proposal only involves single atoms in the sending and receiving devices.

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