Quantum-gas microscope for fermionic atoms

We realize a quantum-gas microscope for fermionic ^{40}K atoms trapped in an optical lattice, which allows one to probe strongly correlated fermions at the single-atom level. We combine 3D Raman sideband cooling with high-resolution optics to simultaneously cool and image individual atoms with singl...

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Published inPhysical review letters Vol. 114; no. 19; p. 193001
Main Authors Cheuk, Lawrence W, Nichols, Matthew A, Okan, Melih, Gersdorf, Thomas, Ramasesh, Vinay V, Bakr, Waseem S, Lompe, Thomas, Zwierlein, Martin W
Format Journal Article
LanguageEnglish
Published United States 15.05.2015
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Summary:We realize a quantum-gas microscope for fermionic ^{40}K atoms trapped in an optical lattice, which allows one to probe strongly correlated fermions at the single-atom level. We combine 3D Raman sideband cooling with high-resolution optics to simultaneously cool and image individual atoms with single-lattice-site resolution at a detection fidelity above 95%. The imaging process leaves the atoms predominantly in the 3D motional ground state of their respective lattice sites, inviting the implementation of a Maxwell's demon to assemble low-entropy many-body states. Single-site-resolved imaging of fermions enables the direct observation of magnetic order, time-resolved measurements of the spread of particle correlations, and the detection of many-fermion entanglement.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.114.193001