Perturbative nonlinear feedback forces for optical levitation experiments

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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Cited by in corpus (3)

• All electrical cooling of an optically levitated nanoparticle
• Generation of classical non-Gaussian distributions by squeezing a thermal state into non-linear motion of levitated optomechanics
• Apparent violations of the second law in the quantum-classical dynamics of interacting levitated nanoparticles