title: Realization of nonequilibrium thermodynamic processes using external colored noise.
abstract: We investigate the dynamics of single microparticles immersed in water that are driven out of equilibrium in the presence of an additional external colored noise. As a case study, we trap a single polystyrene particle in water with optical tweezers and apply an external electric field with flat spectrum but a finite bandwidth of the order of kHz. The intensity of the external noise controls the amplitude of the fluctuations of the position of the particle and therefore of its effective temperature. Here we show, in two different nonequilibrium experiments, that the fluctuations of the work done on the particle obey the Crooks fluctuation theorem at the equilibrium effective temperature, given that the sampling frequency and the noise cutoff frequency are properly chosen.
authors.affiliation: Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain.
authors.forename: Pau
authors.initials: P
authors.lastname: Mestres
authors.affiliation: Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain.
authors.forename: Ignacio A
authors.initials: IA
authors.lastname: Martinez
authors.affiliation: Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain and Photonics and Mathematical Optics Group, Tecnológico de Monterrey, 64849 Mexico.
authors.forename: Antonio
authors.initials: A
authors.lastname: Ortiz-Ambriz
authors.affiliation: Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain.
authors.forename: Raul A
authors.initials: RA
authors.lastname: Rica
authors.affiliation: Institut de Ciències Fotòniques (ICFO), Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels (Barcelona), Spain and Grupo Interdisciplinar de Sistemas Complejos (GISC), Madrid, Spain.
authors.forename: Edgar
authors.initials: E
authors.lastname: Roldan
mesh_terms: D007101:Immersion; D008863:Microspheres; D008962:Models, Theoretical; D052898:Optical Tweezers; D011137:Polystyrenes; D013696:Temperature; D013816:Thermodynamics; D014867:Water
chemical_list: D011137:Polystyrenes; D014867:Water