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Single atom in free space as a quantum aperture

van Enk, S. J. and Kimble, H. J. (2000) Single atom in free space as a quantum aperture. Physical Review A, 61 (5). Art. No. 051802. ISSN 1050-2947.

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We calculate exact three-dimensional solutions of Maxwell equations corresponding to strongly focused light beams, and study their interaction with a single atom in free space. We show how the naive picture of the atom as an absorber with a size given by its radiative cross section σ=3λ2/2π must be modified. The implications of these results for quantum-information-processing capabilities of trapped atoms are discussed.

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Additional Information:©2000 The American Physical Society Received 6 January 2000; published 31 March 2000 We thank R. Legere for discussions. The work of H.J.K. is supported by the Division of Chemical Science, Office of Basic Energy Science, Office of Energy, U.S. Department of Energy. S.J.vE. is funded by DARPA through the QUIC (Quantum Information and Computing) program administered by the U.S. Army Research Office, the National Science Foundation, and the Office of Naval Research.
Issue or Number:5
Record Number:CaltechAUTHORS:ENKpra00
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2679
Deposited By: Archive Administrator
Deposited On:16 Apr 2006
Last Modified:02 Oct 2019 22:55

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