Enhanced atom-by-atom assembly of arbitrary tweezers arrays

TL;DR

This paper presents improved algorithms and experimental validation for atom-by-atom assembly of large, arbitrary arrays of single atoms in optical tweezers, enhancing efficiency and flexibility over previous methods.

Contribution

The authors introduce four variants of the sorting algorithm that reduce moves and enable assembly of arbitrary target arrays, advancing atom assembly techniques.

Findings

Reduced number of moves for assembly

Ability to create arbitrary target arrays

Successful experimental demonstrations

Abstract

We report on improvements extending the capabilities of the atom-by-atom assembler described in [Barredo et al., Science 354, 1021 (2016)] that we use to create fully-loaded target arrays of more than 100 single atoms in optical tweezers, starting from randomly-loaded, half-filled initial arrays. We describe four variants of the sorting algorithm that (i) allow decrease the number of moves needed for assembly and (ii) enable the assembly of arbitrary, non-regular target arrays. We finally demonstrate experimentally the performance of this enhanced assembler for a variety of target arrays.