A two-dimensional lattice of blue detuned atom traps using a projected Gaussian beam array

TL;DR

This paper introduces a novel two-dimensional blue detuned optical lattice using a projected Gaussian beam array, enabling stable, phase-insensitive atom trapping suitable for quantum applications.

Contribution

It presents a new 2D optical lattice design that is phase-insensitive and capable of trapping single atoms in a scalable array.

Findings

Successfully trapped single Cs atoms in 6 and 49 site arrays.

Demonstrated stable atom localization without phase sensitivity.

Analyzed spatial localization capabilities of the lattice.

Abstract

We describe a new type of blue detuned optical lattice for atom trapping which is intrinsically two dimensional, while providing three-dimensional atom localization. The lattice is insensitive to optical phase fluctuations since it does not depend on field interference between distinct optical beams. The array is created using a novel arrangement of weakly overlapping Gaussian beams that creates a two-dimensional array of dark traps which are suitable for magic trapping of ground and Rydberg states. We analyze the spatial localization that can be achieved and demonstrate trapping and detection of single Cs atoms in 6 and 49 site two-dimensional arrays.