Optical Weak Link between Two Spatially Separate Bose-Einstein Condensates

Details Optical Weak Link between Two Spatially Separate Bose-Einstein Condensates Optical Weak Link between Two Spatially Separate Bose-Einstein Condensates

2005-07-06

arxiv.org/abs/cond-mat/0507154v1

Phys. Rev. Lett. 95, 170402 (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.95.170402

Two spatially separate Bose-Einstein condensates were prepared in an optical double-well potential. A bidirectional coupling between the two condensates was established by two pairs of Bragg beams which continuously outcoupled atoms in opposite directions. The atomic currents induced by the optical coupling depend on the relative phase of the two condensates and on an additional controllable coupling phase. This was observed through symmetric and antisymmetric correlations between the two outcoupled atom fluxes. A Josephson optical coupling of two condensates in a ring geometry is proposed. The continuous outcoupling method was used to monitor slow relative motions of two elongated condensates and characterize the trapping potential.

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