Publications by Martin Kiffner

Subwavelength optical lattices induced by position-dependent dark states

Physical Review A - Atomic, Molecular, and Optical Physics 83 (2011)

Q Sun, J Evers, M Kiffner, MS Zubairy

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. © 2011 American Physical Society.

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