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Quantum feedback control of atomic motion in an optical cavity

Steck, Daniel A. and Jacobs, Kurt and Mabuchi, Hideo and Bhattacharya, Tanmoy and Habib, Salman (2004) Quantum feedback control of atomic motion in an optical cavity. Physical Review Letters, 92 (22). Art. No. 223004. ISSN 0031-9007. doi:10.1103/PhysRevLett.92.223004.

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We study quantum feedback cooling of atomic motion in an optical cavity. We design a feedback algorithm that can cool the atom to the ground state of the optical potential with high efficiency despite the nonlinear nature of this problem. An important ingredient is a simplified state-estimation algorithm, necessary for a real-time implementation of the feedback loop. We also describe the critical role of parity dynamics in the cooling process and present a simple theory that predicts the achievable steady-state atomic energies.

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Additional Information:©2004 The American Physical Society. Received 27 October 2003; published 4 June 2004. The authors 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:atoms; ground states; motion control; feedback; parity; atom optics; microcavities; homodyne detection
Issue or Number:22
Record Number:CaltechAUTHORS:STEprl04
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3015
Deposited By: Tony Diaz
Deposited On:11 May 2006
Last Modified:08 Nov 2021 19:52

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