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arXiv · 1404.7385

Spin dynamics in a two dimensional quantum gas

Poul L. Pedersen·Miroslav Gajdacz·Frank Deuretzbacher·Luis Santos·Carsten Klempt·Jacob F. Sherson·Andrew J. Hilliard·Jan J. Arlt
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Abstract

We have investigated spin dynamics in a 2D quantum gas. Through spin-changing collisions, two clouds with opposite spin orientations are spontaneously created in a Bose-Einstein condensate. After ballistic expansion, both clouds acquire ring-shaped density distributions with superimposed angular density modulations. The density distributions depend on the applied magnetic field and are well explained by a simple Bogoliubov model. We show that the two clouds are anti-correlated in momentum space. The observed momentum correlations pave the way towards the creation of an atom source with non-local Einstein-Podolsky-Rosen entanglement.

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Poul L. Pedersen, Miroslav Gajdacz, Frank Deuretzbacher, Luis Santos, Carsten Klempt, Jacob F. Sherson, Andrew J. Hilliard, Jan J. Arlt. 2014-05-26. Spin dynamics in a two dimensional quantum gas. https://doi.org/10.1103/physreva.89.051603

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