Colloquium - Cheng Chin (University of Chicago) - Super-resolution Microscopy on Cold Atoms in an Optical Lattice

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Cheng Chin (University of Chicago) 3/17/20 Colloquium speaker
November 3, 2020
3:45PM - 4:45PM
Location
1080 Physics Research Building, Smith Seminar room - reception at 3:30pm in front of the SSR

Date Range
Add to Calendar 2020-11-03 15:45:00 2020-11-03 16:45:00 Colloquium - Cheng Chin (University of Chicago) - Super-resolution Microscopy on Cold Atoms in an Optical Lattice Super-resolution microscopy has revolutionized the fields of chemistry and biology by resolving features at the single molecule level. In cold atoms, such a scheme can be furthered to reveal the atomic wavefunction of typically 100 nm in size. Here we report super-resolution imaging based on optical pumping, reaching a half-width-at-half-maximum resolution of 16(2) nm.  The center of mass position can be determined with a precision below 500 pm. Our imaging process lasts for only 1 micro-second, which enables us to resolve fast dynamics of atoms within a single lattice site. A surprising observation is the emergence of moiré patterns on the atomic cloud, which can immensely magnify atomic density profile from nano-meter scale to milli-meter scale.     1080 Physics Research Building, Smith Seminar room - reception at 3:30pm in front of the SSR 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 single molecule level. In cold atoms, such a scheme can be furthered to reveal the atomic wavefunction of typically 100 nm in size. Here we report super-resolution imaging based on optical pumping, reaching a half-width-at-half-maximum resolution of 16(2) nm.  The center of mass position can be determined with a precision below 500 pm. Our imaging process lasts for only 1 micro-second, which enables us to resolve fast dynamics of atoms within a single lattice site. A surprising observation is the emergence of moiré patterns on the atomic cloud, which can immensely magnify atomic density profile from nano-meter scale to milli-meter scale.