Replacing Quantum Feedback with Open-Loop Control and Quantum Filtering
Quantum Physics
2010-03-25 v2 Optimization and Control
Abstract
Feedback control protocols can stabilize and enhance the operation of quantum devices, however, unavoidable delays in the feedback loop adversely affect their performance. We introduce a quantum control methodology, combining open-loop control with quantum filtering, which is not constrained by feedback delays. For the problems studied (rapid purification and rapid measurement) we analytically derive lower bounds on the control performance that are comparable with the best corresponding bounds for feedback protocols.
Cite
@article{arxiv.0908.0198,
title = {Replacing Quantum Feedback with Open-Loop Control and Quantum Filtering},
author = {Joshua Combes and Howard M. Wiseman and A. J. Scott},
journal= {arXiv preprint arXiv:0908.0198},
year = {2010}
}
Comments
5 pages, revtex4, 3 eps figures. Comments welcome. V2 minor corrections, published version.