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

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Cheng Chin (University of Chicago) 9/8/20 Colloquium speaker
September 22, 2020
3:45PM - 4:45PM
Location
Virtual colloquium

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Add to Calendar 2020-09-22 15:45:00 2020-09-22 16:45:00 Colloquium - Cheng Chin (James Franck institute, Enrico Fermi institute, University of Chicago) - Super-resolution Microscopy of Cold Atoms in Optical Lattices 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)   Zoom link: https://osu.zoom.us/j/99647600185?pwd=REVCYkdyUU5Mc2xkN1gzd0Y5Tk5uZz09 Meeting ID: 996 4760 0185 Password: 072984   Virtual colloquium Department of Physics physics@osu.edu America/New_York public
Description

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)

 

Zoom link: https://osu.zoom.us/j/99647600185?pwd=REVCYkdyUU5Mc2xkN1gzd0Y5Tk5uZz09

Meeting ID: 996 4760 0185

Password: 072984