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Site-Resolved Imaging of Fermionic Li 6 in an Optical Lattice

2015; American Physical Society; Volume: 114; Issue: 21 Linguagem: Inglês

10.1103/physrevlett.114.213002

1092-0145

Maxwell F. Parsons, Florian Huber, Anton Mazurenko, Christie Chiu, Widagdo Setiawan, Katherine Wooley-Brown, Sebastian Blatt, Markus Greiner,

Quantum, superfluid, helium dynamics

We demonstrate site-resolved imaging of individual fermionic ^{6}Li atoms in a single layer of a 3D optical lattice. To preserve the density distribution during fluorescence imaging, we simultaneously cool the atoms with 3D Raman sideband cooling. This laser cooling technique, demonstrated here for the first time for ^{6}Li atoms, also provides a pathway to rapid low-entropy filling of an optical lattice. We are able to determine the occupation of individual lattice sites with a fidelity >95%, enabling direct, local measurement of particle correlations in Fermi lattice systems. This ability will be instrumental for creating and investigating low-temperature phases of the Fermi-Hubbard model, including antiferromagnets and d-wave superfluidity.