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A levitated atom-nanosphere hybrid quantum system

Hopper, A; Barker, PF; (2024) A levitated atom-nanosphere hybrid quantum system. New Journal of Physics , 26 (1) , Article 013015. 10.1088/1367-2630/ad19f6. Green open access

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Abstract

Near-field, radially symmetric optical potentials supported by a levitated nanosphere can be used for sympathetic cooling and for creating a bound nanosphere-atom system analogous to a large molecule. We demonstrate that the long range, Coulomb-like potential produced by a single blue detuned field increases the collisional cross-section by eight orders of magnitude, allowing fast sympathetic cooling of a trapped nanosphere to microKelvin temperatures using cold atoms. By using two optical fields to create a combination of repulsive and attractive potentials, we demonstrate that a cold atom can be bound to a nanosphere creating a new levitated hybrid quantum system suitable for exploring quantum mechanics with massive particles.

Type: Article
Title: A levitated atom-nanosphere hybrid quantum system
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/1367-2630/ad19f6
Publisher version: http://dx.doi.org/10.1088/1367-2630/ad19f6
Language: English
Additional information: Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license, https://creativecommons.org/licenses/by/4.0/. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI
Keywords: Levitated optomechanics, cold atoms, hybrid quantum systems, cold atom collisions
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10185739
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