2026-07-27T18:45:04Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2109016894 2025-06-02T17:07:11.548Z

4.2 EI 10.15151/ESRF-ES-2109016894 Christina BOEMER Christina Boemer 0000-0001-6627-4037 Alexander Oliver RACK Alexander Rack 0000-0001-9486-3621 Alexander Oliver RACK Alexander Rack 0000-0001-9486-3621 Alexander Oliver RACK Alexander Rack 0000-0001-9486-3621 Dietrich KREBS Dietrich Krebs 0000-0003-4674-6820 Leon Merten LOHSE Leon Merten Lohse 0000-0001-5058-7215 Ankita NEGI Ankita Negi 0009-0008-0006-5708 Example Institute 2028 Data from large facility measurement 2025-04-03T06:00:00Z/2025-04-05T06:00:00Z 2025-04-05T06:00:00Z I CC-BY-4.0 The use of correlated – or even entangled – photon pairs for quantum imaging bears enormous potential to exploit new contrastAbstract: modalities and to reduce dose in X-ray imaging. A promising source of such pairs is the process of X-ray parametric down-conversion. However, it is intrinsically weak – with reported count rates reaching only about 6000 photon-pairs/hour. In order to enable practical applications in X-ray imaging, it is imperative to increase the useable count rate significantly. To achieve this goal, we propose an experiment that will improve both the amount of produced photon pairs (by the exceptional flux density of beamline ID19 – using its pink single- harmonic undulator beams) well as the efficiency of their detection (by the improved detection efficiency using the novel Timepix4-based TEMPUS detector in tandem-configuration). This setup could increase the useable count rate by ~1000×. This increase would render low- dose, quantum X-ray imaging truly viable for fi