Optical Weak Link between Two Spatially Separate Bose-Einstein Condensates

Abstract

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.

4 pages, 5 figures

References in corpus (7)

• Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
• Josephson Junction Arrays with Bose-Einstein Condensates
• Atom interferometry with Bose-Einstein condensates in a double-well potential
• Nonlinear Josephson-type oscillations of a driven, two-component Bose-Einstein condensate
• Dynamic structure factor and momentum distribution of a trapped Bose gas
• Interference of Bose-Einstein condensates in momentum space
• Coherent Collisions between Bose-Einstein Condensates

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