Subwavelength optical lattices induced by position-dependent dark states

Sun, Qingqing; Evers, Jörg; Kiffner, Martin; Zubairy, M. S.

doi:10.1103/PhysRevA.83.053412

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Subwavelength optical lattices induced by position-dependent dark states

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Evers, Jörg
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Kiffner, Martin
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Zubairy, M. S.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Citation

Sun, Q., Evers, J., Kiffner, M., & Zubairy, M. S. (2011). Subwavelength optical lattices induced by position-dependent dark states. Physical Review. A, 83(5): 053412, pp. 1-9. doi:10.1103/PhysRevA.83.053412.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-F2E7-0

Abstract

A method for the generation of subwavelength optical lattices based on multilevel dark states is proposed. The dark state is formed by a suitable combination of standing wave light fields, leading to position-dependent populations of the ground states. An additional field coupling dispersively to one of the ground states translates this position dependence into a subwavelength optical potential. We provide two semiclassical approaches to understand the involved physics, and demonstrate that they lead to identical results in a certain meaningful limit. Then we apply a Monte Carlo simulation technique to study the full quantum dynamics of the subwavelength trapping. Finally, we discuss the relevant time scales for the trapping, optimum conditions, and possible implementations.