期刊
JOURNAL OF OPTICS
卷 18, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2040-8978/18/6/065401
关键词
optically trapped particles; Brownian motion; optomechanics
类别
资金
- Czech Science Agency [GB14-36681G]
The noise-to-signal transitions are very interesting processes in physics, as they might transform environmental noise to useful mechanical effects. We theoretically analyze stochastic noise-to-signal transition of overdamped Brownian motion of a particle in the cubic potential. The particle reaches thermal equilibrium with its environment in the quadratic potential which is suddenly swapped to the cubic potential. We predict a simultaneous increase of both the displacement and signal-to-noise ratio in the cubic potential for the position linearly powered by the temperature of the particle environment. The short-time analysis and numerical simulations fully confirm different dynamical regimes of this noise-to-signal transition.
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