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arXiv · 1008.0845

Sub-Poissonian number differences in four-wave mixing of matter waves

Jean-Christophe Jaskula·Marie Bonneau·Guthrie B. Partridge·Valentina Krachmalnicoff·Piotr Deuar·Karen V. Kheruntsyan·Alain Aspect·Denis Boiron·Christoph I. Westbrook
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Abstract

We demonstrate sub-Poissonian number differences in four-wave mixing of Bose-Einstein condensates of metastable helium. The collision between two Bose-Einstein condensates produces a scattering halo populated by pairs of atoms of opposing velocities, which we divide into several symmetric zones. We show that the atom number difference for opposing zones has sub-Poissonian noise fluctuations whereas that of nonopposing zones is well described by shot noise. The atom pairs produced in a dual number state are well adapted to sub shot-noise interferometry and studies of Einstein-Podolsky-Rosen-type nonlocality tests.

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Jean-Christophe Jaskula, Marie Bonneau, Guthrie B. Partridge, Valentina Krachmalnicoff, Piotr Deuar, Karen V. Kheruntsyan, Alain Aspect, Denis Boiron, Christoph I. Westbrook. 2010-11-03. Sub-Poissonian number differences in four-wave mixing of matter waves. https://doi.org/10.1103/physrevlett.105.190402

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