An Optical Tweezer Array of Ultracold Molecules

September 13, 2019
optical dipole trap
An optical dipole trap (Anderegg, et al.)

Ultracold molecules have important applications that range from quantum simulation and computation to precision measurements probing physics beyond the Standard Model. Optical tweezer arrays of laser-cooled molecules, which allow control of individual particles, offer a platform for realizing this full potential. In a recent issue of Science, Harvard physics grad student Loïc Anderegg and colleaguesin Prof. John Doyle's group report on creating an optical tweezer array of laser-cooled calcium monofluoride molecules. This platform has also allowed scientists to observe ground-state collisions of laser-cooled molecules both in the presence and absence of near-resonant light.

See: L. Anderegg, L.W. Cheuk, Y. Bao, S. Burchesky, W. Ketterle, K.-K. Ni, and J.M. Doyle, "An Optical Tweezer Array of Ultracold Molecules," Science 365 (13 Sep 2019)

Read The Harvard Gazette article: Peter Reuell, "Tiny tweezers," October 2, 2019.