Observation of atom pairs in spontaneous four wave mixing of two colliding Bose-Einstein Condensates

Abstract

We study atom scattering from two colliding Bose-Einstein condensates using a position sensitive, time resolved, single atom detector. In analogy to quantum optics, the process can also be thought of as spontaneous, degenerate four wave mixing of de Broglie waves. We find a clear correlation between atoms with opposite momenta, demonstrating pair production in the scattering process. We also observe a Hanbury Brown and Twiss correlation for collinear momenta, which permits an independent measurement of the size of the pair production source and thus the size of the spatial mode. The back to back pairs occupy very nearly two oppositely directed spatial modes, a promising feature for future quantum optics experiments.

A few typos have been corrected

References in corpus (4)

• Camparison of the Hanbury Brown-Twiss effect for bosons and fermions
• Quantum turbulence and correlations in Bose-Einstein condensate collisions
• Imaging of s and d partial-wave interference in quantum scattering of identical bosonic atoms
• First-principles quantum simulations of dissociation of molecular condensates: Atom correlations in momentum space

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