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Proposed magnetoelectrostatic ring trap for neutral atoms

Hopkins, Asa and Lev, Benjamin and Mabuchi, Hideo (2004) Proposed magnetoelectrostatic ring trap for neutral atoms. Physical Review A, 70 (5). Art. No. 053616. ISSN 1050-2947. doi:10.1103/PhysRevA.70.053616.

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We propose a trap for confining cold neutral atoms in a microscopic ring using a magnetoelectrostatic potential. The trapping potential is derived from a combination of a repulsive magnetic field from a hard drive atom mirror and the attractive potential produced by a charged disk patterned on the hard drive surface. We calculate a trap frequency of [29.7,42.6,62.8] kHz and a depth of [16.1,21.8,21.8] MHz for [Cs-133, Rb-87, K-40], and discuss a simple loading scheme and a method for fabrication. This device provides a one-dimensional potential in a ring geometry that may be of interest to the study of trapped quantum degenerate one-dimensional gases.

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Additional Information:©2004 The American Physical Society. Received 6 February 2004; revised 12 February 2004; published 22 November 2004. The authors thank Axel Scherer for helpful discussions. This work was supported by the Multidisciplinary University Research Initiative program under Grant No. DAAD19-00-1-0374. A.H. acknowledges financial support from the NSF.
Subject Keywords:laser cooling; atom optics; caesium; rubidium; potassium; Bose-Einstein condensation; magnetic field effects; hard discs; disc drives
Issue or Number:5
Record Number:CaltechAUTHORS:HOPpra04
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3218
Deposited By: Tony Diaz
Deposited On:23 May 2006
Last Modified:08 Nov 2021 19:54

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