Perturbative nonlinear feedback forces for optical levitation experiments

• URL: http://arxiv.org/abs/2309.15976v1
• Date: Wed, 27 Sep 2023 19:50:12 GMT
• Title: Perturbative nonlinear feedback forces for optical levitation experiments
• Authors: Oscar Kremer, Daniel Tandeitnik, Rafael Mufato, Igor Califrer, Breno Calderoni, Felipe Calliari, Bruno Melo, Guilherme Tempor\~ao, Thiago Guerreiro
• Abstract summary: We investigate the action of an effective feedback-generated quartic potential on a levitated nanoparticles within a 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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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