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 Q08: Dynamics of Cold Atoms in Optical Lattices
8:00 AM–10:00 AM,
Thursday, June 8, 2023
Room: 206 C
Chair: Dominik Schneble, Stony Brook
Abstract: Q08.00009 : Laser Probing of Alkali Rydberg-Rydberg Transitions with a Phase-Modulated Optical Lattice*
9:36 AM–9:48 AM
Presenter:
Ryan J Cardman
(University of Michigan)
Authors:
Ryan J Cardman
(University of Michigan)
Georg A Raithel
(University of Michigan)
This talk discusses a new method of optically manipulating alkali Rydberg electrons using the intensity gradient of a phase-modulated optical lattice. A cold sample of 85Rb is trapped within a 1064-nm optical lattice and excited to a Rydberg-nS1/2 state. The time-independent ponderomotive A2 interaction of the light field exerts a conservative force on the center-of-mass coordinate of the Rydberg atom at the lattice periodicity while the time-dependent A2 interaction from the phase-modulation at the q-th subharmonic of a Rydberg-Rydberg transition changes the internal state of the atom. Only atoms spatially located within the ∼10 μm beam waist of the optical lattice are addressed. Prohibitive selection rules of the orbital-angular-momentum are avoided in this method; i.e., any change in l is permitted under resonant driving of the transition in first-order perturbation theory. Furthermore, the magnitude of modulation order q is independent from the ponderomotive electronic matrix element. Experimental evidence of this optical manipulation is provided by lattice phase-modulation spectroscopy of the 46S1/2 →46P1/2 and 48S1/2→49S1/2 transitions.
*This work is supported by NSF Grant No. PHY-2110049. R.J.C. acknowledges support from the Rackham Predoctoral Fellowship.
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