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Atomtronic Matter-Wave Lensing

Saurabh Pandey, Hector Mas, Georgios Vasilakis, and Wolf von Klitzing
Phys. Rev. Lett. 126, 170402 – Published 28 April 2021
Physics logo See synopsis: How to Focus a Bose-Einstein Condensate in a Waveguide
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Abstract

In this Letter, we demonstrate magnetogravitational matter-wave lensing as a novel tool in atom-optics in atomtronic waveguides. We collimate and focus matter waves originating from Bose-Einstein condensates and ultracold thermal atoms in ring-shaped time-averaged adiabatic potentials. We demonstrate “delta-kick cooling” of Bose-Einstein condensates, reducing their expansion energies by a factor of 46 down to 800 pK. The atomtronic waveguide ring has a diameter of less than one millimeter, compared to other state-of-the-art experiments requiring zero gravity or free-flight distances of ten meters and more. This level of control with extremely reduced spatial requirements is an important step toward atomtronic quantum sensors.

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  • Received 8 August 2020
  • Revised 5 January 2021
  • Accepted 16 March 2021

DOI:https://doi.org/10.1103/PhysRevLett.126.170402

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

General Physics

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How to Focus a Bose-Einstein Condensate in a Waveguide

Published 28 April 2021

A new “lensing” technique counters the spreading of an ultracold cloud of atoms inside a tiny waveguide.

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Authors & Affiliations

Saurabh Pandey1,2, Hector Mas1,3, Georgios Vasilakis1, and Wolf von Klitzing1,*

  • 1Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Heraklion 70013, Greece
  • 2Department of Materials, Science and Technology, University of Crete, Heraklion 70013, Greece; Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 3Department of Physics, University of Crete, Heraklion 70013, Greece; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA

  • *wvk@iesl.forth.gr

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Vol. 126, Iss. 17 — 30 April 2021

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