17-22 July 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Electric-field measurement in cold ion clouds

19 Jul 2022, 17:00
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Trapped ions, Rydberg atoms, and cold plasmas Poster session


Mr Alisher Duspayev (University of Michigan, Ann Arbor)


The influence of inhomogeneous electric fields in ion clouds on high-angular-momentum Rydberg states is investigated. The fields follow from a superposition of macroscopic and random microscopic (Holtsmark) fields. The ion clouds are induced experimentally by photo-ionizing cold rubidium atoms in the $5D_{3/2}$ state near the focal spot of a near-concentric 1064-nm intracavity optical lattice. We observe how the $n=57$ $F$-state mixes with the neighboring hydrogenic manifold and study evolution of spectroscopic features, such as line broadening and excitation-strength distribution for different numbers of created ions. Pump-probe experiments are performed to study the dynamics of the ion-Rydberg-atom system. Our data is utilized to evaluate the experimental feasibility of inhomogeneous-electric-field sensing with subsequent determination of the ion density. Additional experiments with Rydberg $P$-states are reported as well. Our results might be of interest for future studies of electric fields in non-neutral plasmas and in hybrid cold-atom-ion systems.

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Presenter name Alisher Duspayev

Primary authors

Mr Alisher Duspayev (University of Michigan, Ann Arbor) Prof. Georg Raithel (University of Michigan, Ann Arbor)

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