Stuttgart 2012 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 40: Poster: Ultra-cold atoms, ions and BEC
A 40.22: Poster
Donnerstag, 15. März 2012, 16:30–19:00, Poster.V
Spin dynamics and Rydberg excitations on the single-atom level — •Peter Schauß1, Takeshi Fukuhara Fukuhara1, Marc Cheneau1, Manuel Endres1, Christian Gross1, Stefan Kuhr1,2, and Immanuel Bloch1,3 — 1Max-Planck-Institut für Quantenoptik, 85748 Garching — 2University of Strathclyde, SUPA, Glasgow G4 0NG, UK — 3Ludwig-Maximilians-Universität, 80799 München
Recently, we demonstrated single atom imaging of a quantum gas in an optical lattice [1] and site selective spin manipulation [2]. Here we report on the most recent results obtained using this apparatus: the spreading of a single spin impurity in a fully polarised Mott insulator and the excitation of Rydberg atoms in a quantum gas. In the first project, we make use of a Spatial Light Modulator to flip the spin of a single atom in a fully polarised 1D Mott insulating state. We subsequently record the spreading dynamics of this impurity and distinguish between different regimes depending on the lattice depth. The goal of the second project is to add long-range interactions to our system via Rydberg dressing. The high spatial resolution of our imaging system should allow us, for example, to reveal the strong correlations induced by the long-range interaction.
[1] J. Sherson et al., Nature 467, 68 (2010)
[2] C. Weitenberg et al., Nature 471, 319 (2011)