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Topological lattice using multi-frequency radiation

Published

Author(s)

Ian B. Spielman, Gediminas Juzeli?nas, Tomas Andrijauskas

Abstract

We describe a novel technique for creating an artificial magnetic field for ultra-cold atoms using a periodically pulsed pair of counter propagating Raman lasers that drive transitions between a pair of internal atomic spin states: a multi-frequency coupling term. In conjunction with a magnetic field gradient, this dynamically generates a rectangular lattice with a non-staggered magnetic flux. For a wide range of parameters, the resulting Bloch bands have non-trivial topology, reminiscent of Landau levels, as quantified by their Chern numbers.
Citation
New Journal of Physics

Keywords

Bose Einstein Condensate, Mott Insulator, spin orbit coupling, Floquet, topology

Citation

Spielman, I. , Juzeli?nas, G. and Andrijauskas, T. (2018), Topological lattice using multi-frequency radiation, New Journal of Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=924039 (Accessed August 8, 2022)
Created March 19, 2018, Updated July 2, 2018