Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session V01: Poster Session III (4:00pm-6:00pm, PT)
4:00 PM,
Thursday, June 8, 2023
Room: Exhibit Hall C
Abstract: V01.00098 : Towards fermionic open-shell RbSr molecules*
Presenter:
Premjith Thekkeppatt
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Authors:
Premjith Thekkeppatt
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Digvijay Digvijay
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Simon Lepleux
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Junyu He
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Klaasjan van Druten
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Florian Schreck
(Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam)
Here, we present a novel approach to create these molecules, and our progress towards this goal. Our approach uses confinement induced resonances (CIR) in a strongly interacting Bose-Fermi mixture and overcomes the challenge that magnetic Feshbach resonances which are typically used to create ultracold molecules are extremely narrow between alkali and alkaline-earth atoms. CIRs resonantly couple two atoms jointly confined in a tight trap to a very weakly bound molecular state, in an excited state of the center-of-mass motion in the trap. Our experiment will start by preparing a strongly interacting 87Rb-87Sr Bose-Fermi mixture. In order to suppress inelastic collisions, we intend to first prepare an n=1 Mott insulator of Rb in an optical lattice and then overlap it with a spin-polarized Fermi gas of Sr. After molecule creation by adiabatically ramping the lattice depth across a CIR, we plan to perform STIRAP to the molecular ground state.
*This work is part of the research programme "Atomic quantum simulators 2.0 taming the long-range interactions" with project number 680.92.18.05, which is funded by the Dutch Research Council (NWO).
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