A degenerate Fermi gas of polar molecules

Luigi De Marco, Giacomo Valtolina, Kyle Matsuda, William G. Tobias, Jacob P. Covey, Jun Ye

Research output: Contribution to journalArticle

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-rubidium. 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.

Original languageEnglish (US)
Pages (from-to)853-856
Number of pages4
JournalScience
Volume363
Issue number6429
DOIs
StatePublished - 2019
Externally publishedYes

ASJC Scopus subject areas

  • General

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    De Marco, L., Valtolina, G., Matsuda, K., Tobias, W. G., Covey, J. P., & Ye, J. (2019). A degenerate Fermi gas of polar molecules. Science, 363(6429), 853-856. https://doi.org/10.1126/science.aau7230