Decoherence control: A feedback mechanism based on hamiltonian tracking
Quantum Physics
2007-05-23 v1
Abstract
Enviroment - caused dissipation disrupts the hamiltonian evolution of all quantum systems not fully isolated from any bath. We propose and examine a feedback-control scheme to eliminate such dissipation, by tracking the free hamiltonian evolution. We determine a driving-field that maximizes the projection of the actual molecular system onto the freely propagated one. The evolution of a model two level system in a dephasing bath is followed, and the driving field that overcomes the decoherence is calculated. An implementation of the scheme in the laboratory using feedback control is suggested.
Cite
@article{arxiv.quant-ph/0603021,
title = {Decoherence control: A feedback mechanism based on hamiltonian tracking},
author = {Gil Katz and Mark Ratner and Ronnie Kosloff},
journal= {arXiv preprint arXiv:quant-ph/0603021},
year = {2007}
}