Quantum Phase Slips: from condensed matter to ultracold quantum gases

TL;DR

This paper reviews the concept of quantum phase slips across condensed matter and ultracold gases, highlighting recent experimental observations of their role in dissipation within one-dimensional Bose superfluids.

Contribution

It provides a comprehensive summary of experimental and theoretical advances in understanding quantum phase slips from superconductors to quantum gases.

Findings

Signatures of quantum phase slips observed in ultracold Bose gases.

Quantum phase slips contribute to dissipation in 1D superfluids.

Recent experiments demonstrate quantum phase slips in shallow periodic potentials.

Abstract

Quantum phase slips are the primary excitations in one-dimensional superfluids and superconductors at low temperatures. They have been well characterized in most condensed-matter systems, and signatures of their existence has been recently observed in superfluids based on quantum gases too. In this review we briefly summarize the main results obtained on the investigation of phase slips from superconductors to quantum gases. In particular we focus our attention on recent experimental results of the dissipation in one-dimensional Bose superfluids flowing along a shallow periodic potential, which show signatures of quantum phase slips.