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arXiv · 1311.3892

Route to observing topological edge modes in ultracold fermions

Junjun Xu·Qiang Gu·Erich J. Mueller
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Abstract

We show how to exploit the rich hyperfine structure of fermionic alkali atoms to produce a quasi-1D topological superfluid while avoiding excessive heating from off-resonant scattering. We model interacting fermions where four hyperfine states are coupled by a variety of optical and microwave fields. We calculate the local density of states in a trap, finding regimes with zero energy topological edge modes. Heating rates in this system are significantly suppressed compared to simple Raman-induced spin-orbit coupling approaches.

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Junjun Xu, Qiang Gu, Erich J. Mueller. 2014-01-30. Route to observing topological edge modes in ultracold fermions. https://doi.org/10.1103/physreva.89.013625

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