A degenerate Fermi gas of polar molecules

Author
Abstract
Experimental realization of a quantum degenerate gas of molecules would provide access to a wide range of phenomena in molecular and quantum sciences. However, the very complexity that makes ultracold molecules so enticing has made reaching degeneracy an outstanding experimental challenge over the past decade. We now report the production of a degenerate Fermi gas of ultracold polar molecules of potassium\textendashrubidium (KRb). Through coherent adiabatic association in a deeply degenerate mixture of a rubidium Bose-Einstein condensate and a potassium Fermi gas, we produce molecules at temperatures below 0.3 times the Fermi temperature. We explore the properties of this reactive gas and demonstrate how degeneracy suppresses chemical reactions, making a long-lived degenerate gas of polar molecules a reality.
Year of Publication
2019
Journal
Science
Volume
363
Start Page
853
Date Published
2019-02
ISSN Number
0036-8075
URL
http://www.sciencemag.org/lookup/doi/10.1126/science.aau7230
DOI
10.1126/science.aau7230
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