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Q: Fachverband Quantenoptik und Photonik
Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)
Q 25.30: Poster
Dienstag, 11. März 2025, 14:00–16:00, Tent
Lattice phase stabilization for a dipolar quantum gas microscope — •Alexandra Köpf1, Fiona Hellstern1, Kevin Ng1, Paul Uerlings1, Michael Wischert1, Tanishi Verma1, Stephan Welte2, Ralf Klemt1, and Tilman Pfau1 — 15. Physikalisches Institut and Center for Integrated Quantum Science and Technology IQST, Universität Stuttgart — 25. Physikalisches Institut, Center for Integrated Quantum Science and Technology and CZS Center QPhoton, Universität Stuttgart
This poster presents the development of a dipolar quantum gas microscope using Dysprosium atoms, focusing on the critical role of optical lattice phase stabilization. Dysprosium atoms will be trapped and imaged in a 360 nm UV lattice, achieving nearest-neighbor dipolar interactions of approximately 200 Hz at 10 nK. Maintaining precise lattice stabilization is also essential to confine the atoms within the narrow depth of focus (approximately 260 nm) of the high-resolution in-vacuum objective (NA = 0.9). To achieve this, we use a 1064 nm infrared lattice for vertical confinement, complemented by an active phase stabilization scheme, stabilizing the lattice relative to the objective position. This setup employs FPGA-based boards to monitor and stabilize the lattice phase through a Michelson interferometer, ensuring robust atom confinement and alignment. This approach enables controlled, long-timescale investigations of dipolar quantum phenomena, offering new insights into strongly interacting quantum systems.
Keywords: dipolar; dysprosium; quantum gas microscope; phase stabilization; Hubbard model