Ultra-precise holographic beam shaping for microscopic quantum control

TL;DR

This paper presents a method using programmable holograms on a digital micromirror device to generate highly precise microscopic light patterns, enabling advanced quantum control with aberration correction down to lambda/50.

Contribution

It introduces a novel holographic beam shaping technique that self-corrects aberrations, achieving unprecedented precision for quantum optics experiments.

Findings

Aberration correction reduced to λ/50

Demonstrated single-site addressing in quantum gas microscope

Achieved light pattern precision at 10^{-4} level

Abstract

High-resolution addressing of individual ultracold atoms, trapped ions or solid state emitters allows for exquisite control in quantum optics experiments. This becomes possible through large aperture magnifying optics that project microscopic light patterns with diffraction limited performance. We use programmable amplitude holograms generated on a digital micromirror device to create arbitrary microscopic beam shapes with full phase and amplitude control. The system self-corrects for aberrations of up to several $\lambda$ and reduces them to $\lambda/50$, leading to light patterns with a precision on the $10^{-4}$ level. We demonstrate aberration-compensated beam shaping in an optical lattice experiment and perform single-site addressing in a quantum gas microscope for $^{87}$Rb.