Bifermionic Superfluidity in Toroidal Optical Lattices

TL;DR

This paper explores a novel superfluid phase in a toroidal optical lattice of neutral fermions, revealing unique quantum states and potential applications in quantum computing.

Contribution

It introduces a new type of superfluidity in a 1D ring geometry, distinct from BCS, and discusses the formation of quantum crystals with magnetic order.

Findings

Discovery of a novel superfluid phase in toroidal optical lattices.

Identification of quantum crystal structures with magnetic order.

Potential for quantum computing applications.

Abstract

We consider a gas of neutral fermions trapped in a specific optical trap that provides a tight confinement of a Fermi gas in a torus with a potential periodic along the azimuthal direction. The effective model is interacting fermions moving in a periodic potential along the ring. We show that the model demonstrates a novel type of superfluidity different from the BCS mechanism. This pure 1D quantum gas in a ring can also form crystalline structures with both ferro- and antiferro-magnetic type orders. Possibilities of realization of quantum crystals and their application for quantum computing are discussed.