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arXiv · 1605.02901

Holographic method for site-resolved detection of a 2D array of ultracold atoms

Daniel Kai Hoffmann·Benjamin Deissler·Wolfgang Limmer·Johannes Hecker Denschlag
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Abstract

We propose a novel approach to site-resolved detection of a 2D gas of ultracold atoms in an optical lattice. A near resonant laser beam is coherently scattered by the atomic array and its interference pattern is holographically recorded by superimposing it with a reference laser beam on a CCD chip. Fourier transformation of the recorded intensity pattern reconstructs the atomic distribution in the lattice with single-site resolution. The holographic detection method requires only a few hundred scattered photons per atom in order to achieve a high reconstruction fidelity. Therefore, additional cooling during detection might not be necessary even for light atomic elements such as lithium.

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Daniel Kai Hoffmann, Benjamin Deissler, Wolfgang Limmer, Johannes Hecker Denschlag. 2016-05-10. Holographic method for site-resolved detection of a 2D array of ultracold atoms. https://doi.org/10.1007/s00340-016-6501-1

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