Pair correlation of atoms scattered from colliding Bose-Einstein 
quasicondensates

Zin, Pawel; Wasak, Tomasz; Boiron, Denis; Westbrook I, Christoph

doi:10.1103/PhysRevA.101.033616

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Pair correlation of atoms scattered from colliding Bose-Einstein quasicondensates

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Wasak, Tomasz
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Zin, P., Wasak, T., Boiron, D., & Westbrook I, C. (2020). Pair correlation of atoms scattered from colliding Bose-Einstein quasicondensates. Physical Review A, 101(3): 033616. doi:10.1103/PhysRevA.101.033616.

Cite as: https://hdl.handle.net/21.11116/0000-0006-6E0F-0

Abstract

We consider elastic scattering of atoms from elongated clouds taking into account an effective, finite duration of the collision due to the expansion of the condensates. We also include the quasicondensate nature of the degenerate quantum gas, due to a finite temperature of the system. We evaluate the pair-correlation function measured experimentally in Kheruntsyan et al. [Phys. Rev. Lett. 108, 260401 (2012)] and show that the finite duration of the collision is an important factor determining the properties of the correlations. Our analytic calculations are in agreement with the measurements. The analytical model we provide, useful for identifying physical processes that influence the correlations, is relevant for experiments with nonclassical pairs of atoms.