1-D Mott insulator transition of a Bose-Einstein condensate

TL;DR

This paper experimentally demonstrates the superfluid to one-dimensional Mott-insulator transition in a Bose-Einstein condensate using an optical lattice, analyzing the transition dynamics and phase behavior.

Contribution

It presents the first experimental observation of a 1D Mott insulator transition in a BEC with detailed analysis of the transition dynamics and phase properties.

Findings

Successful demonstration of 1D Mott insulator transition in BEC

Use of Kapitza-Dirac scattering to measure lattice depth

Insights into the transition dynamics and steady-state phases

Abstract

The superfluid to one-dimensional Mott-insulator transition of a 87Rb Bose-Einstein condensate is demonstrated. In the experiment, we apply a one-dimensional optical lattice, formed by two laser beams with a wavelength of 852 nm, to a three dimensional BEC in a shallow trap. We use Kapitza-Dirac scattering to determine the depth of the optical lattice without knowledge of its exact geometry. We further study the dynamics of the transition as well as steady-state phase behavior specific to the one-dimensional case.