SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster III
Q 42.23: Poster
Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof
Quantum Fluctuation Forces between Trapped Nanospheres — •Clemens Jakubec1, Uros Delic1, Pablo Solano2, Markus Aspelmeyer1, and Kanupriya Sinha3 — 1Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria — 2Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción, Concepción, Chile — 3School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ 85287-5706, USA
We present an analysis of the quantum fluctuation forces between two dielectric nanospheres trapped via optical tweezers. We develop a full quantum description of the radiative forces between the two nanospheres considering their mutual interaction mediated via the classical trapping field and the quantum fluctuations of the electromagnetic field. An analysis of the three separate contributions to the total potential – the Casimir-Polder potential, the classical trap potential and the optical binding potential – is presented. The total potential is subsequently studied as a function of various parameters, such as the tweezer field intensity and phase, demonstrating that, for appropriate sets of parameters, there exists a mutual bound state of the two nanospheres which can be ∼ 1000 K deep. Our results are pertinent to ongoing experiments with trapped nanospheres in the macroscopic quantum regime.