Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 33: Quantum Information (Concepts and Methods) III

Q 33.1: Gruppenbericht

Dienstag, 6. März 2018, 14:00–14:30, K 1.019

Quantum imaging with incoherent X-rays — •Joachim von Zanthier — for the Quantum Imaging Collaboration: Department Physik, Universität Erlangen-Nürnberg, 91058 Erlangen; Department Physik, Universität Hamburg, 22761 Hamburg; Center for Free-Electron Laser Science, 22761 Hamburg; The Hamburg Centre for Ultrafast Imaging, 22761 Hamburg; Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg

For more than 100 years, coherent diffraction of X-rays has been used to determine the structure of crystals and molecules. For this approach incoherence due to wavefront distortions or incoherent fluorescence emission - often the predominant scattering mechanism - is usually considered detrimental. Here we show that methods from quantum imaging, i.e., exploiting higher order intensity correlations, can be used to reconstruct and image the full 1D, 2D and even 3D arrangement of incoherently scattering objects [1-4]. Incoherent diffraction imaging allows for a significantly higher resolution compared to conventional coherent diffractive imaging techniques. We discuss a number of properties that are conceptually superior and point out that current free-electron lasers are ideally suited for the implementation of the approach [3]. We also present a first experimental demonstration in the soft X-ray domain, where we use higher-order intensity correlations to achieve higher fidelities and potentially a sub-Abbe resolution [4]. [1] S. Oppel et al., PRL 109, 233603 (2012). [2] A. Classen et al., PRL 117, 253601 (2016). [3] A. Classen et al., PRL 119, 053401 (2017). [4] R. Schneider et al., Nature Phys., published online October 30, 2017.