Molecules cooled below the Doppler limit

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Title: Molecules cooled below the Doppler limit
Author(s): Truppe, S
Williams, HJ
Hambach, M
Caldwell, L
Fitch, NJ
Hinds, EA
Sauer, BE
Tarbutt, MR
Item Type: Journal Article
Abstract: The ability to cool atoms below the Doppler limit -- the minimum temperature reachable by Doppler cooling -- has been essential to most experiments with quantum degenerate gases, optical lattices and atomic fountains, among many other applications. A broad set of new applications await ultracold molecules, and the extension of laser cooling to molecules has begun. A molecular magneto-optical trap has been demonstrated, where molecules approached the Doppler limit. However, the sub-Doppler temperatures required for most applications have not yet been reached. Here we cool molecules to 50 uK, well below the Doppler limit, using a three-dimensional optical molasses. These ultracold molecules could be loaded into optical tweezers to trap arbitrary arrays for quantum simulation, launched into a molecular fountain for testing fundamental physics, and used to study ultracold collisions and ultracold chemistry.
Publication Date: 28-Aug-2017
Date of Acceptance: 21-Jul-2017
ISSN: 1745-2473
Publisher: Nature Publishing Group
Journal / Book Title: Nature Physics
Copyright Statement: Copyright © 2017, Rights Managed by Nature Publishing Group
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: GR/S71866/01
Keywords: physics.atom-ph
01 Mathematical Sciences
02 Physical Sciences
Fluids & Plasmas
Publication Status: Published
Embargo Date: 2018-02-28
Appears in Collections:Quantum Optics and Laser Science
Faculty of Natural Sciences

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