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arXiv · 0809.4859

Control of state and state entanglement with a single auxiliary subsystem

R. Rossi Jr.·A. R. Bosco de Magalhães·J. G. Peixoto de Faria·M. C. Nemes
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Abstract

We present a strategy to control the evolution of a quantum system. The novel aspect of this protocol is the use of a \emph{single auxiliary subsystem}. Two applications are given, one which allows for state preservation and another which controls the degree of entanglement of a given initial state.

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R. Rossi Jr., A. R. Bosco de Magalhães, J. G. Peixoto de Faria, M. C. Nemes. 2008-09-28. Control of state and state entanglement with a single auxiliary subsystem. https://doi.org/10.1103/physreva.79.012103

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