SAMOP 2023 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 67: Optomechanics III

Q 67.4: Talk

Friday, March 10, 2023, 11:45–12:00, F442

Co-trapping an atomic ion and a silica nanoparticle in a Paul trap — •Dmitry S. Bykov, Lorenzo Dania, Florian Goschin, and Tracy E. Northup — Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria

In this work, we experimentally demonstrate the simultaneous trapping of two objects whose charge-to-mass ratio differs by six orders of magnitude in the same Paul trap. The first object is a calcium ion with a single elementary charge and a mass of 40 Da. The second object is a silica nanoparticle with 1000 elementary charges and a mass of 10¹⁰ Da. To achieve simultaneous trapping, we drive the trap electrodes with two radio-frequency tones: one to trap the nanoparticle and the other to trap the atomic ion. Such a dual-frequency drive allows us to circumvent the charge-to-mass selectivity of a Paul trap. This demonstration paves the way for building a hybrid ion-nanoparticle system under ultra-high vacuum. Such a system is a promising platform for advancing quantum control of particle motion and testing quantum mechanics at unprecedented levels.