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Deep Laser Cooling and Efficient Magnetic Compression of Molecules

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Title: Deep Laser Cooling and Efficient Magnetic Compression of Molecules
Authors: Caldwell, L
Devlin, J
Williams, H
Fitch, N
Hinds, E
Sauer, B
Tarbutt, M
Item Type: Journal Article
Abstract: We introduce a scheme for deep laser cooling of molecules based on robust dark states at zero velocity. By simulating this scheme, we show it to be a widely applicable method that can reach the recoil limit or below. We demonstrate and characterise the method experimentally, reaching a temperature of 5.4(7) μK. We solve a general problem of measuring low temperatures for large clouds by rotating the phase-space distribution and then directly imaging the complete velocity distribution. Using the same phase-space rotation method, we rapidly compress the cloud. Applying the cooling method a second time, we compress both the position and velocity distributions.
Issue Date: 16-Jul-2019
Date of Acceptance: 5-Jun-2019
URI: http://hdl.handle.net/10044/1/70285
DOI: 10.1103/PhysRevLett.123.033202
ISSN: 0031-9007
Publisher: American Physical Society
Journal / Book Title: Physical Review Letters
Volume: 123
Issue: 3
Copyright Statement: © 2019 American Physical Society. This article: L. Caldwell, J. A. Devlin, H. J. Williams, N. J. Fitch, E. A. Hinds, B. E. Sauer, and M. R. Tarbutt Phys. Rev. Lett. 123, 033202 – Published 16 July 2019, has been published in final form at https://doi.org/10.1103/PhysRevLett.123.033202 .
Sponsor/Funder: Engineering & Physical Science Research Council (E
Engineering and Physical Sciences Research Council
Funder's Grant Number: RF040529
Keywords: Science & Technology
Physical Sciences
Physics, Multidisciplinary
General Physics
02 Physical Sciences
Publication Status: Published
Article Number: 033202
Appears in Collections:Quantum Optics and Laser Science
Faculty of Natural Sciences