An Optical Tweezer Array of Ultracold Molecules

Understand

Arrays of single ultracold molecules promise to be a powerful platform for many applications ranging from quantum simulation to precision measurement.

• Here we report on the creation of an optical tweezer array of single ultracold CaF molecules.
• By utilizing light-induced collisions during the laser cooling process, we trap single molecules.
• The high densities attained inside the tweezer traps have also enabled us to observe in the absence of light molecule-molecule collisions of laser cooled molecules for the first time.