Lambertus Hesselink

Differential phase contrast imaging can provide direct access to electron density, and dark field (or small angle scatter) contrast enables access to surface and texture details significantly below the detector resolution. These new imaging capabilities offer the opportunity to image soft tissue for medical applications, or liquids and low density powders for aviation security applications. In contrast to sources for optical interferometers, X-ray sources are incoherent, requiring external means to create partially coherent photons.

Michael Raymer

In an initial experiment by our group, photon inter­ference between a nonlocal single-photon state and a spectrally single-mode, quasi-thermal source has been implemented, enabling reconstruction of the source spatial distribution with increased usable signal per source photon detected in coincidence with the nonlocal oscillator photon – the first instance of quantum-enhanced sensing in this context. The longer-term goal is to discover the optimal quantum-enhanced protocol to achieve ultimate SNR and telescope resolution of faint astronomical objects.