Stabilization of the p-wave superfluid state in an optical lattice

TL;DR

This paper demonstrates that a stable p-wave superfluid state can be achieved in an optical lattice by suppressing collisional losses via the quantum Zeno effect, revealing complex phase transitions.

Contribution

It introduces a method to stabilize p-wave superfluidity in optical lattices using the quantum Zeno effect, with derived Hamiltonian and phase diagram analysis.

Findings

Stable p-wave superfluid state achievable in optical lattice

Rich phase transitions between superfluid and insulator states

Suppression of collisional losses via quantum Zeno effect

Abstract

It is hard to stabilize the p-wave superfluid state of cold atomic gas in free space due to inelastic collisional losses. We consider the p-wave Feshbach resonance in an optical lattice, and show that it is possible to have a stable p-wave superfluid state where the multi-atom collisional loss is suppressed through the quantum Zeno effect. We derive the effective Hamiltonian for this system, and calculate its phase diagram in a one-dimensional optical lattice. The results show rich phase transitions between the p-wave superfluid state and different types of insulator states induced either by interaction or by dissipation.