Erlangen 2022 – scientific programme
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A: Fachverband Atomphysik
A 31: Ultra-cold atoms, ions and BEC IV (joint session A/Q)
A 31.1: Invited Talk
Friday, March 18, 2022, 10:30–11:00, A-H1
Cavity-enhanced optical lattices for scaling neutral atom quantum technologies — •Jan Trautmann1,2, Annie J. Park1,2, Valentin Klüsener1,2, Dimitry Yankelev1,2, Immanuel Bloch1,2,3, and Sebastian Blatt1,2 — 1MPQ, 85748 Garching, Germany — 2MCQST, 80799 München, Germany — 3LMU, 80799 München, Germany
We present a solution to scale up optical lattice experiments with ultracold atoms by an order of magnitude compared to the state-of-the-art. We utilize power enhancement in optical cavities to create two-dimensional optical lattices with large mode waists using low input power. We test our system using high-resolution clock spectroscopy on ultracold Strontium atoms trapped in the lattice. The observed spectral features can be used to locally measure the lattice potential envelope and the sample temperature with a spatial resolution limited only by the optical resolution of the imaging system. The measured lattice mode waist is 489(8) μm and the trap lifetime is 59(2) s. We observe a long-term stable lattice frequency and trap depth on the MHz level and the 0.1% level. Our results demonstrate that large, deep, and stable two-dimensional cavity-enhanced lattices can be created at any wavelength and can be used to scale up neutral-atom-based quantum simulators, quantum computers, sensors, and optical lattice clocks.
[1] A. J. Park, J. Trautmann, N. Šantić, V. Klüsener, A. Heinz, I.Bloch, and S. Blatt. Cavity-enhanced optical lattices for scaling neutral atom quantum technologies, arXiv:2110.08073, (2021).