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A: Fachverband Atomphysik

A 42: Poster Session IIIb

A 42.4: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Zelt Ost

A Versatile Strontium Quantum Gas Machine with a Microscope — •Oleksiy Onishchenko, Sergey Pyatchenkov, Alexander Urech, Georgios Siviloglou, and Florian Schreck — Institute of Physics, University of Amsterdam, Amsterdam, The Netherlands

Strontium opens new perspectives for Hamiltonian engineering because it is an alkaline-earth element with narrow intercombination lines, metastable excited electronic states, and ten collisionally-stable SU(N)-symmetric nuclear spin states.

We have built a new versatile Sr machine with quantum gas microscope capability. After precooling on a broad blue transition, we collect 10⁷ atoms at 2 µK in a narrow-line red MOT, load them into a 1064 nm dipole trap, and evaporatively cool them to obtain either a BEC of 8 × 10⁴ atoms or a degenerate Fermi gas with T/T_F = 0.3. We have now also observed for the first time the doubly-forbidden ¹S₀ - ³P₂ transition in ⁸⁷Sr by direct laser excitation, which opens up possibilities for quantum computation [1] and gauge field engineering.

[1] Daley, A.J., Quant. Inform. Process. 10, 865 (2011).