Hybrid 2D surface trap for quantum simulation

TL;DR

This paper introduces a new optical trapping method combining evanescent, standing wave, and magnetic potentials to create a stable, deeply 2D Bose-Einstein condensate near a surface, enabling advanced quantum simulations.

Contribution

The paper presents a novel hybrid optical trapping scheme that achieves a deeply 2D BEC with high trap aspect ratio and long lifetime, suitable for quantum simulation near surfaces.

Findings

Achieved a trap aspect ratio of 300:1:1.

Created a stable 2D BEC close to a surface.

Demonstrated long trap lifetimes suitable for quantum applications.

Abstract

We demonstrate a novel optical trapping scheme for ultracold atoms. Using a combination of evanescent wave, standing wave, and magnetic potentials we create a deeply 2D Bose-Einstein condensate (BEC) at a few microns from a glass surface. Using techniques such as broadband "white" light to create evanescent and standing waves, we realize a smooth potential with a trap frequency aspect ratio of 300:1:1 and long lifetimes. This makes the setup suitable for many-body quantum simulations and applications such as high precision measurements close to surfaces.