High-resolution imaging of Rydberg atoms in optical lattices using an aspheric-lens objective in vacuum
arXiv:2002.11906 · doi:10.1063/5.0006026
Abstract
We present a high-resolution, simple and versatile system for imaging ultracold Rydberg atoms in optical lattices. The imaging objective is a single aspheric lens (with a working distance of 20.6 mm and a numerical aperture (NA) of 0.51) placed inside the vacuum chamber. Adopting a large-working-distance lens leaves room for electrodes and electrostatic shields to control electric fields around Rydberg atoms. With this setup, we achieve an Rayleigh resolution of 1.10 m or ( nm), limited by the NA of the aspheric lens. For systems of highly excited Rydberg states with blockade radii greater than a few m, the resolution achieved is sufficient for studying many physical processes of interest.
arXiv comment6 pages, 4 figures
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