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Title: Species-specific optical lattices

Abstract

We examine single-frequency optical schemes for species-selective trapping of ultracold alkali-metal atoms. Independently addressing the elements of a binary mixture enables the creation of an optical lattice for one atomic species with little or no effect on the other. We analyze a 'tune-in' scheme, using near-resonant detuning to create a strong potential for one specific element. A 'tune-out' scheme is also developed, in which the trapping wavelength is chosen to lie between two strong transitions of an alkali-metal atom such that the induced dipole moment is zero for that species but is nonzero for any other. We compare these schemes by examining the trap depths and heating rates associated with both. We find that the tune-in scheme is preferable for Li-Na, Li-K, and K-Na mixtures, while the tune-out scheme is preferable for Li-Cs, K-Rb, Rb-Cs, K-Cs, and {sup 39}K-{sup 40}K mixtures. Several applications of species-selective optical lattices are explored, including the creation of a lattice for a single species in the presence of a phononlike background, the tuning of relative effective mass, and the isothermal increase of phase-space density.

Authors:
;  [1]
  1. Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7 (Canada)
Publication Date:
OSTI Identifier:
20982572
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.053612; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BINARY MIXTURES; CESIUM; COMPARATIVE EVALUATIONS; DIPOLE MOMENTS; EFFECTIVE MASS; LITHIUM; PHASE SPACE; PHOTON-ATOM COLLISIONS; POTASSIUM; POTASSIUM 39; POTASSIUM 40; POTENTIALS; RADIATION PRESSURE; RUBIDIUM; SODIUM; TEMPERATURE RANGE 0000-0013 K; TRAPPING; WAVELENGTHS

Citation Formats

LeBlanc, L. J., and Thywissen, J. H. Species-specific optical lattices. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.053612.
LeBlanc, L. J., & Thywissen, J. H. Species-specific optical lattices. United States. doi:10.1103/PHYSREVA.75.053612.
LeBlanc, L. J., and Thywissen, J. H. Tue . "Species-specific optical lattices". United States. doi:10.1103/PHYSREVA.75.053612.
@article{osti_20982572,
title = {Species-specific optical lattices},
author = {LeBlanc, L. J. and Thywissen, J. H.},
abstractNote = {We examine single-frequency optical schemes for species-selective trapping of ultracold alkali-metal atoms. Independently addressing the elements of a binary mixture enables the creation of an optical lattice for one atomic species with little or no effect on the other. We analyze a 'tune-in' scheme, using near-resonant detuning to create a strong potential for one specific element. A 'tune-out' scheme is also developed, in which the trapping wavelength is chosen to lie between two strong transitions of an alkali-metal atom such that the induced dipole moment is zero for that species but is nonzero for any other. We compare these schemes by examining the trap depths and heating rates associated with both. We find that the tune-in scheme is preferable for Li-Na, Li-K, and K-Na mixtures, while the tune-out scheme is preferable for Li-Cs, K-Rb, Rb-Cs, K-Cs, and {sup 39}K-{sup 40}K mixtures. Several applications of species-selective optical lattices are explored, including the creation of a lattice for a single species in the presence of a phononlike background, the tuning of relative effective mass, and the isothermal increase of phase-space density.},
doi = {10.1103/PHYSREVA.75.053612},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}