Observation of collisions between two ultracold ground-State CaF molecules

Lawrence W. Cheuk, Loïc Anderegg, Yicheng Bao, Sean Burchesky, Scarlett S. Yu, Wolfgang Ketterle, Kang Kuen Ni, John M. Doyle

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


We measure inelastic collisions between ultracold CaF molecules by combining two optical tweezers, each containing a single molecule. We observe collisions between, and in excited hyperfine and rotational states. In the absolute ground state, we find a two-body loss rate of, which is below, but close to, the predicted universal loss rate.

Original languageEnglish (US)
Article number043401
JournalPhysical review letters
Issue number4
StatePublished - Jul 24 2020

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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