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Quantum technologies

Dieter Meschede's research group
Home Few-atom quantum systems Single-site detection

Single-site detection

Single-site detection

Single-site addressing and transport cannot be analyzed without matching detection to determine the position of an atom with single-site precision. Our fluorescence detection combines a cooled EMCCD camera with a self-designed objective and careful suppression of stray light to optimize the signal-to-noise ratio. The remaining gap is closed by a deconvolution algorithm that numerically corrects the imaging optics' defects, resulting in a proven detection of each atoms' position in the lattice. Read our publication.

Fig. 2: Binning of picture data to count atoms (left), deconvolution and fitting separates atoms with overlapping images (right).