Title | Topological lattice using multi-frequency radiation |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | T. Andrijauskas, I. B. Spielman, and G. Juzeliunas |
Journal | NEW JOURNAL OF PHYSICS |
Volume | 20 |
Pagination | 055001 |
Date Published | MAY 3 |
Type of Article | Article |
ISSN | 1367-2630 |
Keywords | artificial gauge fields, Floquet, flux lattice |
Abstract | We describe a novel technique for creating an artificial magnetic field for ultracold 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.}, %%Address = {TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
DOI | 10.1088/1367-2630/aab7a3 |