Cavity-mediated unconventional pairing in ultracold fermionic atoms
Quantum Gases
2019-10-02 v1 Quantum Physics
Abstract
We investigate long-range pairing interactions between ultracold fermionic atoms confined in an optical lattice which are mediated by the coupling to a cavity. In the absence of other perturbations, we find three degenerate pairing symmetries for a two-dimensional square lattice. By tuning a weak local atomic interaction via a Feshbach resonance or by tuning a weak magnetic field, the superfluid system can be driven from a topologically trivial s-wave to topologically ordered, chiral superfluids containing Majorana edge states. Our work points out a novel path towards the creation of exotic superfluid states by exploiting the competition between long-range and short-range interactions.
Cite
@article{arxiv.1906.10035,
title = {Cavity-mediated unconventional pairing in ultracold fermionic atoms},
author = {Frank Schlawin and Dieter Jaksch},
journal= {arXiv preprint arXiv:1906.10035},
year = {2019}
}