Number of the records: 1

Using the transient trajectories of an optically levitated nanoparticle to characterize a stochastic Duffing oscillator

SYSNO ASEP	0535312
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Using the transient trajectories of an optically levitated nanoparticle to characterize a stochastic Duffing oscillator
Author(s)	Flajšmanová, Jana (UPT-D) Šiler, Martin (UPT-D)_{RID, ORCID, SAI} Jedlička, Petr (UPT-D)_{RID, SAI} Hrubý, František (UPT-D) Brzobohatý, Oto (UPT-D)_{RID, ORCID, SAI} Filip, R. (CZ) Zemánek, Pavel (UPT-D)_{RID, SAI, ORCID}
Number of authors	7
Article number	14436
Source Title	Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322 Roč. 10, č. 1 (2020)
Number of pages	14 s.
Publication form	Print - P
Language	eng - English
Country	GB - United Kingdom
Keywords	optically levitating nanoparticles ; transient trajectories ; Duffing oscillator
Subject RIV	BH - Optics, Masers, Lasers
OECD category	Optics (including laser optics and quantum optics)
R&D Projects	GA19-17765S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Open access
Institutional support	UPT-D - RVO:68081731
UT WOS	000608581100021
EID SCOPUS	85090091694
DOI	10.1038/s41598-020-70908-z
Annotation	We propose a novel methodology to estimate parameters characterizing a weakly nonlinear Duffing oscillator represented by an optically levitating nanoparticle. The method is based on averaging recorded trajectories with defined initial positions in the phase space of nanoparticle position and momentum and allows us to study the transient dynamics of the nonlinear system. This technique provides us with the parameters of a levitated nanoparticle such as eigenfrequency, damping, coefficient of nonlinearity and effective temperature directly from the recorded transient particle motion without any need for external driving or modification of an experimental system. Comparison of this innovative approach with a commonly used method based on fitting the power spectrum density profile shows that the proposed complementary method is applicable even at lower pressures where the nonlinearity starts to play a significant role and thus the power spectrum density method predicts steady state parameters. The technique is applicable also at low temperatures and extendable to recent quantum experiments. The proposed method is applied on experimental data and its validity for one-dimensional and three-dimensional motion of a levitated nanoparticle is verified by extensive numerical simulations.
Workplace	Institute of Scientific Instruments
Contact	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Year of Publishing	2021
Electronic address	https://www.nature.com/articles/s41598-020-70908-z

Number of the records: 1