Entanglement-assisted local manipulation of pure quantum states

Details Entanglement-assisted local manipulation of pure quantum states Entanglement-assisted local manipulation of pure quantum states

1999-05-22

arxiv.org/abs/quant-ph/9905071v2

Phys.Rev.Lett.83:3566-3569,1999

Physics

Quantum Physics

Published version, including important changes

Scientific paper

10.1103/PhysRevLett.83.3566

We demonstrate that local transformations on a composite quantum system can be enhanced in the presence of certain entangled states. These extra states act much like catalysts in a chemical reaction: they allow otherwise impossible local transformations to be realised, without being consumed in any way. In particular, we show that this effect can considerably improve the efficiency of entanglement concentration procedures for finite states.

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