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Nonlocal quantum differentiation between polarization objects using entanglement
Vira R. Besaga, Luosha Zhang, Andres Vega +6
For a wide range of applications a fast, non-destructive, remote, and sensitive identification of samples with predefined characteristics is preferred instead of their full charact…
Resolving Photon Numbers Using Ultra-High-Resolution Timing of a Single Low-Jitter Superconducting Nanowire Detector
Gregor Sauer, Mirco Kolarczik, Rodrigo Gomez +2
Photon-number-resolving (PNR) detectors are a key enabling technology in photonic quantum information processing. Here, we demonstrate the PNR capacity of conventional superconduct…
Experimental analysis on image resolution of quantum imaging with undetected light through position correlations
Marta Gilaberte Basset, René Sondenheimer, Jorge Fuenzalida +7
Image resolution of quantum imaging with undetected photons is governed by the spatial correlations existing between the photons of a photon pair that has been generated in a nonli…
Enhancing the purity of single photons in parametric down-conversion through simultaneous pump-beam and crystal-domain engineering
Baghdasar Baghdasaryan, Fabian Steinlechner, Stephan Fritzsche
Spontaneous parametric down-conversion (SPDC) has shown great promise in the generation of pure and indistinguishable single photons. Photon pairs produced in bulk crystals are hig…
Adjustable spatial filter for optimal free-space quantum communication round the clock
Andrej Kržič, Nico Döll, Uday Chandrashekara +2
Free-space quantum communication in daylight relies crucially on spatial filtering. The optimal filter configuration, however, depends on ever-changing link conditions. To this end…