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Quantum gas microscopy with spin, atom-number, and multilayer readout

Philipp M. Preiss, Ruichao Ma, M. Eric Tai, Jonathan Simon, and Markus Greiner
Phys. Rev. A 91, 041602(R) – Published 15 April 2015

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 Rapid Communication, 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 interplane 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.

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  • Received 30 January 2015

DOI:https://doi.org/10.1103/PhysRevA.91.041602

©2015 American Physical Society

Authors & Affiliations

Philipp M. Preiss, Ruichao Ma, M. Eric Tai, Jonathan Simon*, and Markus Greiner

  • Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA

  • *Present address: James Franck Institute, Department of Physics, The University of Chicago, Chicago, Illinois 60637.
  • greiner@physics.harvard.edu

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Issue

Vol. 91, Iss. 4 — April 2015

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