Quantum point spread function for imaging trapped fewbody systems with a quantum gas microscope
Abstract
Quantum gas microscopes, which image the atomic occupations in an optical lattice, have opened a new avenue to the exploration of manybody lattice systems. Imaging trapped systems after freezing the density distribution by ramping up a pinning lattice leads, however, to a distortion of the original density distribution, especially when its structures are on the scale of the pinning lattice spacing. We show that this dynamics can be described by a filter, which we call in analogy to classical optics a quantum point spread function. Using a machine learning approach, we demonstrate via several experimentally relevant setups that a suitable deconvolution allows for the reconstruction of the original density distribution. These findings are both of fundamental interest for the theory of imaging and of immediate importance for current quantum gas experiments.
 Publication:

arXiv eprints
 Pub Date:
 June 2018
 arXiv:
 arXiv:1806.08982
 Bibcode:
 2018arXiv180608982K
 Keywords:

 Condensed Matter  Quantum Gases;
 Quantum Physics
 EPrint:
 5 figures