Decoherence-free subspaces for a quantum register interacting with a spin environment
Quantum Physics
2014-09-12 v1
Abstract
We study a model of a quantum spin register interacting with an environment of spin particles in quantum-measurement limit. In the limit of collective decoherence we obtain the form of state vectors that constitute high-dimensional decoherence-free subspaces (DFS). In a more general setting we present sufficient and necessary conditions for existence of low-dimensional DFSs that can be used to construct subspaces of higher dimension.
Cite
@article{arxiv.1409.3494,
title = {Decoherence-free subspaces for a quantum register interacting with a spin environment},
author = {Paweł Należyty and Dariusz Chruściński},
journal= {arXiv preprint arXiv:1409.3494},
year = {2014}
}
Comments
6 pages, 1 table