Effectivep-wave interaction and topological superfluids ins-wave quantum gases

Quench-induced Floquet topological p-wave superfluids.

Ultracold atomic gases in two dimensions tuned close to a p-wave Feshbach resonance were expected to exhibit topological superfluidity, but these were found to be experimentally unstable. We show that one can induce a topological Floquet superfluid if weakly interacting atoms are brought suddenly close ("quenched") to such a resonance, in the time before the instability kicks in. The resulting ...

Vortices in p-Wave Superfluids of Trapped Fermionic Atom Gases

In order to help detecting superfluidity, we theoretically investigate p-wave pairing superfluids in neutral Fermion atom gases confined by a three dimensimentional (3D) harmonic potential. The Ginzburg-Landau framework, which is generic for p-wave superfluids, is used to describe the order parameter spatial structure, or texture characterized by the l-vector both at rest and under rotation. Th...

Topological Quantum Fluctuations and Traveling Wave Amplifiers

Vittorio Peano, Martin Houde, Florian Marquardt, and Aashish A. Clerk Institute for Theoretical Physics, University of Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany Department of Physics, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8, Canada Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1/Bau 24, 91058 Erlangen, Germany Department of Ph...

Kelvin-wave turbulence in superfluids

Realizing one-dimensional topological superfluids with ultracold atomic gases

We propose an experimental implementation of a topological superfluid with ultracold fermionic atoms. An optical superlattice is used to juxtapose a 1D gas of fermionic atoms and a 2D conventional superfluid of condensed Feshbach molecules. The latter acts as a Cooper pair reservoir and effectively induces a superfluid gap in the 1D system. Combined with a spin-dependent optical lattice along t...