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

10 May 2016  ·  Hoffmann Daniel Kai, Deissler Benjamin, Limmer Wolfgang, Denschlag Johannes Hecker ·

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. read more

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Quantum Gases Atomic Physics Optics