Quantum gas microscopy with spin, atom-number and multi-layer readout
| Autor: | Ruichao Ma, Markus Greiner, Jonathan Simon, M. Eric Tai, Philipp M. Preiss |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Optical lattice Condensed matter physics Quantum gas Bilayer FOS: Physical sciences Parity (physics) Trapping Molecular physics Atomic and Molecular Physics and Optics Quantum Gases (cond-mat.quant-gas) Microscopy Atomic number Condensed Matter - Quantum Gases |
| Popis: | 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. 6 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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