Rostock 2019 – wissenschaftliches Programm

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SYXR: Symposium Atomic Physics, Molecular Physics, and Quantum Optics with X-ray FELs

SYXR 1: Atomic Physics, Molecular Physics and Quantum Optics with X-ray FELs

SYXR 1.2: Hauptvortrag

Donnerstag, 14. März 2019, 14:30–15:00, U Audimax

Quantum imaging with incoherently scattered light from a Free-Electron Laser — •Joachim von Zanthier — Universität Erlangen-Nürnberg, Erlangen, Germany

For more than 100 years, X-rays have been used in crystallography to determine the structure of crystals and molecules via coherent diffraction methods. However, these techniques rely on coherent scattering where incoherence due to fluorescence emission or wavefront distortion is considered detrimental. Here we show that methods from quantum imaging, i.e., exploiting higher order intensity correlations, can be used to image the full 1D, 2D and even 3D arrangement of sources that scatter incoherent X-ray radiation, e.g., arrangements of atoms in crystals or molecules that scatter X-ray fluorescence photons [1-4]. We discuss a number of properties of this incoherent diffraction imaging (IDI) method that are conceptually superior to those of conventional coherent X-ray structure determination and point out that current FELs are ideally suited for the implementation of the approach [3]. 1.S. Oppel, T. Büttner, P. Kok, J. von Zanthier, Phys. Rev. Lett. 109, 233603 (2012). 2.A. Classen, F. Waldmann, S. Giebel, R. Schneider, D. Bhatti, T. Mehringer, J. von Zanthier, Phys. Rev. Lett. 117, 253601 (2016). 3. A. Classen, K. Ayyer, H. N. Chapman, R. Röhlsberger, J. von Zanthier, Phys. Rev. Lett. 119, 053401 (2017). 4. R. Schneider et al., Nature Phys. 14, 126 (2018); News & Views, Nature Photon. 12, 6 (2018).