Transport of Bose-Einstein Condensates With Optical Tweezers

Phys Rev Lett. 2002 Jan 14;88(2):020401. doi: 10.1103/PhysRevLett.88.020401. Epub 2001 Dec 21.


We have transported gaseous Bose-Einstein condensates over distances up to 44 cm. This was accomplished by trapping the condensate in the focus of an infrared laser and translating the location of the laser focus with controlled acceleration. Condensates of order 10(6) atoms were moved into an auxiliary chamber and loaded into a magnetic trap formed by a Z-shaped wire. This transport technique avoids the optical and mechanical access constraints of conventional condensate experiments and creates many new scientific opportunities.