Topological lattice using multi-frequency radiation.
New J Phys
; 202018.
Article
em En
| MEDLINE
| ID: mdl-30996650
We describe anoveltechniqueforcreatinganartificialmagneticfieldforultracoldatomsusinga periodicallypulsedpairofcounterpropagatingRamanlasersthatdrivetransitionsbetween 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.
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MEDLINE
Idioma:
En
Ano de publicação:
2018
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Article