Decoherence of encoded quantum registers
Quantum Physics
2008-02-05 v2
Abstract
In order to eliminate disturbing effects of decoherence, encoding of quantum information in decoherence-free subspaces has been suggested. We analyze the benefits of this concept for a quantum register that is realized in a spin chain in contact with a common bosonic bath. Within a dissipation-less model we provide explicit analytical results for the average fidelity of plain and encoded quantum registers. For the investigation of dissipative spin-boson couplings we employ a master equation of Bloch-Redfield type.
Cite
@article{arxiv.0708.3775,
title = {Decoherence of encoded quantum registers},
author = {Stefan Borghoff and Rochus Klesse},
journal= {arXiv preprint arXiv:0708.3775},
year = {2008}
}
Comments
13 pages, 9 figures