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

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....

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Bibliographic Details
Published inarXiv.org
Main Authors Hoffmann, Daniel Kai, Deissler, Benjamin, Limmer, Wolfgang, Johannes Hecker Denschlag
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 10.05.2016
Subjects
Coherent scattering
Fourier transforms
Laser beams
Lithium
Optical lattices
Photons
Physics - Atomic Physics
Physics - Optics
Physics - Quantum Gases
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1605.02901