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Optimal Cooling of Multiple Levitated Particles through Far-Field Wavefront Shaping

Jakob Hüpfl, Nicolas Bachelard, Markus Kaczvinszki, Michael Horodynski, Matthias Kühmayer, and Stefan Rotter
Phys. Rev. Lett. 130, 083203 – Published 22 February 2023
Physics logo See synopsis: Freezing Particle Motion with a Matrix
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Abstract

Light forces can be harnessed to levitate mesoscopic objects and cool them down toward their motional quantum ground state. Roadblocks on the way to scale up levitation from a single to multiple particles in close proximity are the requirements to constantly monitor the particles’ positions as well as to engineer light fields that react fast and appropriately to their movements. Here, we present an approach that solves both problems at once. By exploiting the information stored in a time-dependent scattering matrix, we introduce a formalism enabling the identification of spatially modulated wavefronts, which simultaneously cool down multiple objects of arbitrary shapes. An experimental implementation is suggested based on stroboscopic scattering-matrix measurements and time-adaptive injections of modulated light fields.

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  • Received 1 April 2021
  • Revised 7 June 2022
  • Accepted 17 January 2023

DOI:https://doi.org/10.1103/PhysRevLett.130.083203

© 2023 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

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Freezing Particle Motion with a Matrix

Published 22 February 2023

Researchers predict that the “scattering matrix” of a collection of particles could be used to slow the particles down, potentially allowing for the cooling of significantly more particles than is possible with current techniques.

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Authors & Affiliations

Jakob Hüpfl1, Nicolas Bachelard1,2,*, Markus Kaczvinszki1, Michael Horodynski1, Matthias Kühmayer1, and Stefan Rotter1,†

  • 1Institute for Theoretical Physics, Vienna University of Technology (TU Wien), A–1040 Vienna, Austria
  • 2Université de Bordeaux, CNRS, LOMA, UMR 5798, F-33405 Talence, France

  • *Corresponding author. nicolas.bachelard@gmail.com
  • Corresponding author. stefan.rotter@tuwien.ac.at

See Also

Optimal cooling of multiple levitated particles: Theory of far-field wavefront shaping

Jakob Hüpfl, Nicolas Bachelard, Markus Kaczvinszki, Michael Horodynski, Matthias Kühmayer, and Stefan Rotter
Phys. Rev. A 107, 023112 (2023)

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Vol. 130, Iss. 8 — 24 February 2023

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