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Perturbative nonlinear feedback forces for optical levitation experiments

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Author(s):
Kremer, Oscar ; Tandeitnik, Daniel ; Mufato, Rafael ; Califrer, Igor ; Calderoni, Breno ; Calliari, Felipe ; Melo, Bruno ; Temporao, Guilherme ; Guerreiro, Thiago
Total Authors: 9
Document type: Journal article
Source: PHYSICAL REVIEW A; v. 109, n. 2, p. 9-pg., 2024-02-20.
Abstract

Feedback control can be used to generate well-determined nonlinear effective potentials in an optical trap, a goal whose applications may range from nonequilibrium 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. (AU)

FAPESP's process: 21/06736-5 - Nonlinear optomechanical devices as transducers for the quantum internet
Grantee:Thiago Barbosa dos Santos Guerreiro
Support Opportunities: Research Grants - Young Investigators Grants