Optical tweezers as a mathematically driven spatio-temporal potential generator

Abstract

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.

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• Stochastic thermodynamics, fluctuation theorems, and molecular machines
• The Entropy Production Fluctuation Theorem and the Nonequilibrium Work Relation for Free Energy Differences
• Equilibrium free energy differences from nonequilibrium measurements: a master equation approach
• Efficiency at maximum power: An analytically solvable model for stochastic heat engines
• Generalized Jarzynski Equality under Nonequilibrium Feedback Control
• High-precision test of Landauer's principle in a feedback trap
• Brownian Carnot engine
• Stochastic thermodynamics of resetting
• Lossless Brownian information engine
• Erasure without work in an asymmetric, double-well potential
• Direct measurement of nonequilibrium system entropy is consistent with Gibbs-Shannon form
• Virtual potentials for feedback traps
• Real-time calibration of a feedback trap
• Experimental realization of Feynman's ratchet

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• Obtaining efficient thermal engines from interacting Brownian particles under time dependent periodic drivings
• Transport and Diffusion Enhancement in Experimentally Realized Non-Gaussian Correlated Ratchets
• Bona fide stochastic resonance under nonGaussian active fluctuations
• Experimentally achieving minimal dissipation via thermodynamically optimal transport
• Full Counting Statistics and Fluctuation Theorem for the Currents in the Discrete Model of Feynman's Ratchet
• Fluctuation theorems with optical tweezers: theory and practice