Mediated Homogenization

Details Mediated Homogenization Mediated Homogenization

2007-08-20

arxiv.org/abs/0708.2657v2

Phys. Rev. A 76, 062307 (2007)

Physics

Quantum Physics

6 pages, 6 figures

Scientific paper

10.1103/PhysRevA.76.062307

Homogenization protocols model the quantum mechanical evolution of a system to a fixed state independently from its initial configuration by repeatedly coupling it with a collection of identical ancillas. Here we analyze these protocols within the formalism of "relaxing" channels providing an easy to check sufficient condition for homogenization. In this context we describe mediated homogenization schemes where a network of connected qudits relaxes to a fixed state by only partially interacting with a bath. We also study configurations which allow us to introduce entanglement among the elements of the network. Finally we analyze the effect of having competitive configurations with two different baths and we prove the convergence to dynamical equilibrium for Heisenberg chains.

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