Optimal Quantum Cloning via Stimulated Emission

Details Optimal Quantum Cloning via Stimulated Emission Optimal Quantum Cloning via Stimulated Emission

1999-10-12

arxiv.org/abs/quant-ph/9910048v1

Phys. Rev. Lett. 84, 2993 (2000)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.84.2993

We show that optimal universal quantum cloning can be realized via stimulated emission. Universality of the cloning procedure is achieved by choosing systems that have appropriate symmetries. We first discuss a scheme based on stimulated emission in certain three-level-systems, e.g. atoms in a cavity. Then we present a way of realizing optimal universal cloning based on stimulated parametric down-conversion. This scheme also implements the optimal universal NOT operation.

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