Freiburg 2024 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 55: Poster VI

Q 55.19: Poster

Donnerstag, 14. März 2024, 17:00–19:00, Tent B

Towards a Quantum Gas Microscope for fermionic NaK molecules — •Leonard Bleiziffer, Shrestha Biswas, Sebastian Eppelt, Xingyan Chen, Christine Frank, Timon Hilker, Immanuel Bloch, and Xinyu Luo — Max Planck Institute for Quantum Optics, Garching, Germany

This poster presents the development of a quantum gas microscope tailored for fermionic sodium-potassium (NaK) molecules in an optical lattice. Our approach involves disassembling the molecules and then applying Raman Sideband cooling to the potassium atoms. This technique will enable the imaging of potassium atoms through the utilization of thousands of scattered photons, ensuring their retention within the lattice despite the heating due to photon recoil. We address the challenges associated with implementing Raman sideband cooling in such a setup, particularly the required Raman-and repumper-beams apparent from the hyperfine fermionic potassium level structure. Also, we describe the plan for a modification of the optical lattice into a deep, bow-tie configuration to reach the Lamb-Dicke regime necessary for Raman Sideband cooling. As a demonstrative example, we want to explore the long-range XY model, which is particularly noteworthy as it can only be simulated in the context of the long-range interactions characteristic of polar molecules, a feat not achievable with standard atomic quantum simulators. We currently work on a tensor-network simulation of the long-range XY model showcasing the dynamics of the global spin-polarization that we later want to compare to the quantum simulation utilizing the new Quantum gas microscope.

Keywords: Quantum Gas Microscope; Raman Sideband Cooling; Quantum Simulation; Ultracold Molecules