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Colloquium - Cheng Chin (James Franck institute, Enrico Fermi institute, University of Chicago) - Super-resolution Microscopy of Cold Atoms in Optical Lattices

Cheng Chin (University of Chicago) 9/8/20 Colloquium speaker
September 22, 2020
3:45 pm - 4:45 pm
ZOOM Webinar

Super-resolution microscopy has revolutionized the fields of chemistry and biology by resolving features at the molecular level. In atomic physics, such a scheme can be applied to further reveal the atomic wavefunction and to perform quantum control. Here we demonstrate super-resolution imaging based on nonlinear response of atoms to an optical pumping pulse [1]. With this technique the atomic density distribution can be imaged with a full-width-at-half-maximum resolution of 32(4) nm and a localization precision below 500 pm. The short optical pumping pulse of 1.4 us enables us to resolve fast atomic dynamics within a single lattice site. A byproduct of our scheme is the emergence of moiré patterns on the atomic cloud, which we show to be immensely magnified images of the atomic density in the lattice.

[1] Super-resolution microscopy of cold atoms in an optical lattice, Mickey McDonald, Jonathan Trisnadi, Kai-Xuan Yao, Cheng Chin, Physical Review X 9, 021001 (2019)

 

Colloquium talk link:  https://osu.zoom.us/rec/share/aihBl-bHJet7vJGI9bWKM1yLv3SXxqcKqbQOaPWLa-LpUqEqy7x33KGznSC2EdZJ.Ifkcrxh8rFvt0QUm