Optimal quantum cloning via stimulated emission
Physical review letters, 2000•APS
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, eg, 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.
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, eg, 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.
Abstract
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, eg, 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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