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Quantum-Gas Microscope for Fermionic Atoms

2015; American Physical Society; Volume: 114; Issue: 19 Linguagem: Inglês

10.1103/physrevlett.114.193001

1092-0145

Lawrence W. Cheuk, Matthew A. Nichols, Melih Okan, Thomas Gersdorf, Vinay Ramasesh, Waseem Bakr, Thomas Lompe, Martin W. Zwierlein,

Electronic and Structural Properties of Oxides

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.