Quantum cloning without signaling

Details Quantum cloning without signaling Quantum cloning without signaling

1998-01-06

arxiv.org/abs/quant-ph/9801005v1

Phys.Lett. A242 (1998) 1-3

Physics

Quantum Physics

Scientific paper

10.1016/S0375-9601(98)00170-4

Perfect Quantum Cloning Machines (QCM) would allow to use quantum nonlocality
for arbitrary fast signaling. However perfect QCM cannot exist. We derive a
bound on the fidelity of QCM compatible with the no-signaling constraint. This
bound equals the fidelity of the Bu\v{z}ek-Hillery QCM.

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