Twin-atom beams

Details Twin-atom beams Twin-atom beams

2010-12-10

arxiv.org/abs/1012.2348v1

Physics

Condensed Matter

Quantum Gases

8 pages (including supplementary material), 5 figures

Scientific paper

We present highly efficient emission of twin-atom beams into a single transverse mode. As a source, we use a one-dimensional degenerate Bose gas in the first excited state of a tight waveguide potential. We observe the fluctuations in the population imbalance between the beams and find a suppression by one order of magnitude below the classical shot noise limit. The necessary excitation of the source is achieved by optimal control of the external wave function. Fundamental conservation laws ensure relaxation into the correlated modes, which is enhanced by bosonic amplification, analogous to an optical parametric oscillator for light.

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