Quantum gas microscopy with spin, atom-number and multi-layer readout
Abstract
Atom- and site-resolved experiments with ultracold atoms in optical lattices provide a powerful platform for the simulation of strongly correlated materials. In this letter, we present a toolbox for the preparation, control and site-resolved detection of a tunnel-coupled bilayer degenerate quantum gas. Using a collisional blockade, we engineer occupation-dependent inter-plane transport which enables us to circumvent light-assisted pair loss during imaging and count n=0 to n=3 atoms per site. We obtain the first number- and site-resolved images of the Mott insulator "wedding cake" structure and observe the emergence of antiferromagnetic ordering across a magnetic quantum phase transition. We are further able to employ the bilayer system for spin-resolved readout of a mixture of two hyperfine states. This work opens the door to direct detection of entanglement and Kosterlitz-Thouless-type phase dynamics, as well as studies of coupled planar quantum materials.
Cite
@article{arxiv.1504.05250,
title = {Quantum gas microscopy with spin, atom-number and multi-layer readout},
author = {Philipp M. Preiss and Ruichao Ma and M. Eric Tai and Jonathan Simon and Markus Greiner},
journal= {arXiv preprint arXiv:1504.05250},
year = {2015}
}
Comments
6 pages, 6 figures