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arXiv · 2309.15976

Perturbative nonlinear feedback forces for optical levitation experiments

Oscar Kremer·Daniel Tandeitnik·Rafael Mufato·Igor Califrer·Breno Calderoni·Felipe Calliari·Bruno Melo·Guilherme Temporão·Thiago Guerreiro
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Abstract

Feedback control can be used to generate well-determined nonlinear effective potentials in an optical trap, a goal whose applications may range from non-equilibrium thermodynamics to the generation of non-Gaussian states of mechanical motion. Here, we investigate the action of an effective feedback-generated quartic potential on a levitated nanoparticle within the perturbation regime. The effects of feedback delay are discussed and predictions from the perturbation theory of a Brownian particle subjected to a quartic anharmonicity are experimentally verified.

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Oscar Kremer, Daniel Tandeitnik, Rafael Mufato, Igor Califrer, Breno Calderoni, Felipe Calliari, Bruno Melo, Guilherme Temporão, Thiago Guerreiro. 2023-09-27. Perturbative nonlinear feedback forces for optical levitation experiments. https://doi.org/10.1103/physreva.109.023521

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