Bayesian feedback control of a two-atom spin-state in an atom-cavity system
Quantum Physics
2012-12-18 v1 Atomic Physics
Abstract
We experimentally demonstrate real-time feedback control of the joint spin-state of two neutral Caesium atoms inside a high finesse optical cavity. The quantum states are discriminated by their different cavity transmission levels. A Bayesian update formalism is used to estimate state occupation probabilities as well as transition rates. We stabilize the balanced two-atom mixed state, which is deterministically inaccessible, via feedback control and find very good agreement with Monte-Carlo simulations. On average, the feedback loops achieves near optimal conditions by steering the system to the target state marginally exceeding the time to retrieve information about its state.
Cite
@article{arxiv.1206.3184,
title = {Bayesian feedback control of a two-atom spin-state in an atom-cavity system},
author = {Stefan Brakhane and Wolfgang Alt and Tobias Kampschulte and Miguel Martinez-Dorantes and René Reimann and Seokchan Yoon and Artur Widera and Dieter Meschede},
journal= {arXiv preprint arXiv:1206.3184},
year = {2012}
}
Comments
4 pages, 4 figures