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Feedback cooling of atomic motion in cavity QED

Steck, Daniel A. and Jacobs, Kurt and Mabuchi, Hideo and Habib, Salman and Bhattacharya, Tanmoy (2006) Feedback cooling of atomic motion in cavity QED. Physical Review A, 74 (1). Art. No. 012322. ISSN 1050-2947. doi:10.1103/PhysRevA.74.012322.

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We consider the problem of controlling the motion of an atom trapped in an optical cavity using continuous feedback. In order to realize such a scheme experimentally, one must be able to perform state estimation of the atomic motion in real time. While in theory this estimate may be provided by a stochastic master equation describing the full dynamics of the observed system, integrating this equation in real time is impractical. Here we derive an approximate estimation equation for this purpose, and use it as a drive in a feedback algorithm designed to cool the motion of the atom. We examine the effectiveness of such a procedure using full simulations of the cavity QED system, including the quantized motion of the atom in one dimension.

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Additional Information:©2006 The American Physical Society (Received 8 October 2005; published 31 July 2006) The authors would like to thank Andrew Doherty and Sze Tan for helpful discussions. This research was performed in part using the resources of the Advanced Computing Laboratory, Institutional Computing Initiative, and LDRD program of Los Alamos National Laboratory.
Subject Keywords:radiation pressure; atom-photon collisions; optical feedback; laser cooling; quantum electrodynamics; stochastic processes; master equation
Issue or Number:1
Record Number:CaltechAUTHORS:STEpra06
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4591
Deposited By: Archive Administrator
Deposited On:29 Aug 2006
Last Modified:08 Nov 2021 20:18

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