Optical tweezers as a mathematically driven spatio-temporal potential generator

The ability to create and manipulate the spatio-temporal potentials is essential in the diverse fields of science and technology. Here, we introduce an optical feedback trap system based on a high precision position detection and an ultrafast feedback control of a Brownian particle in the optical tw...

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Bibliographic Details
Published in:arXiv.org 2018-09
Main Authors: Albay, John A C, Paneru, Govind, Pak, Hyuk Kyu, Yonggun Jun
Format: Article
Language:English
Subjects:
Brownian motion
Feedback control
Optical feedback
Variation
Online Access:Get full text
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Summary:The ability to create and manipulate the spatio-temporal potentials is essential in the diverse fields of science and technology. Here, we introduce an optical feedback trap system based on a high precision position detection and an ultrafast feedback control of a Brownian particle in the optical tweezers to generate spatio-temporal virtual potentials of the desired shape in a controlled manner. As an application, we study nonequilibrium fluctuation dynamics of the particle in a time-varying virtual harmonic potential and validate the Crooks fluctuation theorem in highly nonequilibrium condition.
ISSN:2331-8422