Optimal Feedback Cooling of a Charged Levitated Nanoparticle with Adaptive Control

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU132392" target="_blank" >RIV/00216305:26620/19:PU132392 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.223602" target="_blank" >https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.223602</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.122.223602" target="_blank" >10.1103/PhysRevLett.122.223602</a>

Result language
angličtina
Original language name
Optimal Feedback Cooling of a Charged Levitated Nanoparticle with Adaptive Control
Original language description
We use an optimal control protocol to cool one mode of the center-of-mass motion of an optically levitated nanoparticle. The feedback technique relies on exerting a Coulomb force on a charged particle with a pair of electrodes and follows the control law of a linear quadratic regulator, whose gains are optimized by a machine learning algorithm in under 5 s. With a simpler and more robust setup than optical feedback schemes, we achieve a minimum center-of-mass temperature of 5 mK at 3×10-7 mbar and transients 10-600 times faster than cold damping. This cooling technique can be easily extended to 3D cooling and is particularly relevant for studies demanding high repetition rates and force sensing experiments with levitated objects.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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