Universal destabilization and slowing of spin transfer functions by a bath of spins
Quantum Physics
2007-05-23 v2
Abstract
We investigate the effect of a spin bath on the spin transfer functions of a permanently coupled spin system. When each spin is coupled to a seperate environment, the effect on the transfer functions in the first excitation sector is amazingly simple: the group velocity is slowed down by a factor of two, and the fidelity is destabilized by a modulation of |cos Gt|, where G is the mean square coupling to the environment.
Cite
@article{arxiv.quant-ph/0601047,
title = {Universal destabilization and slowing of spin transfer functions by a bath of spins},
author = {Daniel Burgarth and Sougato Bose},
journal= {arXiv preprint arXiv:quant-ph/0601047},
year = {2007}
}
Comments
4 pages, 5 figures; added references