Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics IV
Q 58.73: Poster
Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof
Microscopic Observations in Degenerate Fermionic Lattice Gases — •MARTIN BOLL1, TIMON HILKER1, AHMED OMRAN1, KATHARINA KLEINLEIN1, GUILLAUME SALOMON1, IMMANUEL BLOCH1,2, and CHRISTIAN GROSS1 — 1Max-Planck Institute of Quantum Optics — 2Faculty of Physics, LMU Munich
Ultracold atoms in optical lattices provide a powerful platform for the controlled study of quantum many-body physics. We present here the first studies of a Fermi gas with a new generation quantum gas microscope, which allows to observe the full atom number statistics on every site. The common problem of light induced losses is avoided by an additional small scale ”pinning lattice” for Raman sideband cooling during the imaging.
We report the local observation of Pauli’s exclusion principle in a spin-polarized degenerate gas of 6Li fermions in an optical lattice. In the band insulating regime, we measure a strong local suppression of particle number fluctuations and we extract a local entropy as low as 0.3 kB per atom. In addition we present our progress studying the metal to Mott-insulating transition. Our work opens an avenue for studying local density and even magnetic correlations in fermionic quantum matter both in and out of equilibrium.