Unconventional superfluidity in Bose-Fermi Mixtures

TL;DR

This paper proposes a two-dimensional Bose-Fermi mixture system that enables high-temperature superfluidity with unconventional pairing symmetries, hosting non-Abelian anyonic excitations suitable for experimental observation.

Contribution

It introduces a highly tunable 2D system with non-standard pairing symmetries and high transition temperatures, demonstrating the potential for observing non-Abelian anyons.

Findings

Achieves experimentally feasible superfluid transition temperatures.

Demonstrates non-Abelian anyonic excitations.

Provides a platform for observing braiding properties of anyons.

Abstract

Pairing between fermions that attract each other, reveal itself to the macroscopic world in the form of superfluidity. Since the discovery of fermionic superfluidity, intense search has been going on to find various unconventional forms of fermion pairing as well as to increase the transition temperature. Here, we show that a two dimensional mixture of single-component fermions and dipolar bosons allows to reach experimentally feasible superfluid transition temperatures for non-standard pairing symmetries. Excitations in these superfluids are anyonic and their statistics depends on the order of their permutations, i.e is non-Abelian. Our results provide for the first time an example of a highly tunable system which exhibits various kind of pairing symmetry and high transition temperature. Additionally, they provide a playground to observe anyonic excitations and their braiding properties.