Thermally induced passage and current of particles in a highly unstable optical potential

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33159908" target="_blank" >RIV/61989592:15310/16:33159908 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevE.94.042108" target="_blank" >http://dx.doi.org/10.1103/PhysRevE.94.042108</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.94.042108" target="_blank" >10.1103/PhysRevE.94.042108</a>

Result language

angličtina

Original language name

Thermally induced passage and current of particles in a highly unstable optical potential

Original language description

We discuss the statistics of first-passage times of a Brownian particle moving in a highly unstable nonlinear potential proportional to an odd power of position. We observe temperature-induced shortening of the mean first-passage time and its dependence on the power of nonlinearity. We propose a passage-time fraction as both a simple and experimentally detectable witness of the nonlinearity. It is advantageously independent of all other parameters of the experiment and observable for a small number of trajectories. To better characterize the stochastic passage in the unstable potential, we introduce an analogy of the signal-to-noise ratio for the statistical distribution of the first-passage times. Interestingly, the upper bound for the signal-to-noise ratio is temperature independent in the unstable potential. Finally, we describe the nonequilibrium steady state of the particle cyclically passing through unstable odd nonlinearity. The maximum of the steady-state probability distribution shifts against the directions of the current and this counterintuitive effect increases with temperature. All these thermally induced effects are very promising targets for experimental tests of highly nonlinear stochastic dynamics of particles placed into optical potential landscapes of shaped optical tweezers.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

<a href="/en/project/GB14-36681G" target="_blank" >GB14-36681G: Center of Excellence for Classical and Quantum Interactions in Nanoworld</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review E

ISSN

1539-3755

e-ISSN

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Volume of the periodical

94

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

"042108-1"-"042108-9"

UT code for WoS article

000385635100002

EID of the result in the Scopus database

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