Production of Two Overlapping Bose-Einstein Condensates by Sympathetic Cooling

Published

January 1, 1997

Author(s)

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

Abstract

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.

Citation

Physical Review Letters

Volume

78

Issue

No. 4

Pub Type

Journals

Keywords

Bose-Einstein condensation, magneto-optical trap

Citation

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 April 26, 2024)