Collective-Mode Enhanced Matter-Wave Optics

verfasst von
Christian Deppner, Waldemar Herr, Merle Cornelius, Peter Stromberger, Tammo Sternke, Christoph Grzeschik, Alexander Grote, Jan Rudolph, Sven Herrmann, Markus Krutzik, André Wenzlawski, Robin Corgier, Eric Charron, David Guéry-Odelin, Naceur Gaaloul, Claus Lämmerzahl, Achim Peters, Patrick Windpassinger, Ernst M. Rasel
Abstract

In contrast to light, matter-wave optics of quantum gases deals with interactions even in free space and for ensembles comprising millions of atoms. We exploit these interactions in a quantum degenerate gas as an adjustable lens for coherent atom optics. By combining an interaction-driven quadrupole-mode excitation of a Bose-Einstein condensate (BEC) with a magnetic lens, we form a time-domain matter-wave lens system. The focus is tuned by the strength of the lensing potential and the oscillatory phase of the quadrupole mode. By placing the focus at infinity, we lower the total internal kinetic energy of a BEC comprising 101(37) thousand atoms in three dimensions to 3/2 kB·38-7+6 pK. Our method paves the way for free-fall experiments lasting ten or more seconds as envisioned for tests of fundamental physics and high-precision BEC interferometry, as well as opens up a new kinetic energy regime.

Organisationseinheit(en)
Institut für Quantenoptik
QuantumFrontiers
Externe Organisation(en)
Johannes Gutenberg-Universität Mainz
Humboldt-Universität zu Berlin
Universität Paris-Saclay
Université de Toulouse
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Universität Bremen
Typ
Artikel
Journal
Physical review letters
Band
127
ISSN
0031-9007
Publikationsdatum
03.09.2021
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Physik und Astronomie (insg.)
Elektronische Version(en)
https://doi.org/10.1103/PhysRevLett.127.100401 (Zugang: Geschlossen)