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Production of Two Overlapping Bose-Einstein Condensates by Sympathetic Cooling



C J. Myatt, E A. Burt, R W. Ghrist, Eric A. Cornell, C E. Wieman


A double magneto-optic trap apparatus with a number of desirable features was used to create condensates of 2x106 atoms in either of the F=2, m=2 or F=1, m=-1 spin states of 87Rb. Overlapping condenstates of the two states were also created using nearly lossless sympathetic cooling of one state via thermal conduct with the other. We observed the i) the scattering length of the 1,-1 state is positive, ii) the rate constant for spin exchange collisions between the two state is 2(1) x 10-14 cm3/s, and iii) there is a repulsive interaction between the two condensates. Other similarities and differences between the behaviors of the two spin states are discussed.
Physical Review Letters
No. 4


Bose-Einstein condensation, magneto-optical trap


Myatt, C. , Burt, E. , Ghrist, R. , Cornell, E. and Wieman, C. (1997), Production of Two Overlapping Bose-Einstein Condensates by Sympathetic Cooling, Physical Review Letters (Accessed July 20, 2024)


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Created December 31, 1996, Updated October 12, 2021