SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 67: Optomechanics III
Q 67.3: Vortrag
Freitag, 10. März 2023, 11:30–11:45, F442
Tunable light-induced dipole-dipole interaction between optically levitated nanoparticles — •Jakob Rieser1, Mario A. Ciampini1, Henning Rudolph2, Nikolai Kiesel1, Klaus Hornberger2, Benjamin A. Stickler2, Markus Aspelmeyer1, and Uroš Delić1 — 1Faculty of Physics, University of Vienna, Vienna, AUT — 2Faculty of Physics, University of Duisburg-Essen, Duisburg, DEU
By coupling mechanical systems one can observe interesting collective effects, such as topological phonon transport or in the quantum case the possibility of entanglement. Current optomechanical experiments utilize an optical cavity mode to mediate interactions, which limits the tunability of the system. Here we are interested in directly coupling parties using scattered light in a finely controlled manner.
It has been known that optically levitated microparticles can interact through light – optically bind – and form self-organized patterns that resemble crystals. In my talk, I will present coherent, direct interaction between two dielectric nanoparticles levitated in a trap array. In contrast to previous optical binding studies, the interparticle coupling is inherently non-reciprocal. I will show how tuning the relative optical phase, laser powers, and the particle distance gives us full control of the optical interactions. Finally, I will demonstrate how we can suppress the optical coupling using the light polarization, in which case we can observe electrostatic interactions.