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Q: Fachverband Quantenoptik und Photonik

Q 40: Quantum Effects (QED) I

Q 40.4: Vortrag

Mittwoch, 13. März 2019, 14:45–15:00, S Ex 04 E-Tech

X-ray Quantum Frequency Conversion: Analysis and Future Applications — •Christina Boemer, Andreas Galler, and Christian Bressler — European XFEL GmbH Holzkoppel 4, 22869 Schenefeld, Germany

Nonlinear processes in the optical regime are well understood and applied extensively to study light matter interactions, unlike processes in the burgeoning field of x-ray quantum optics. In contrast to conventional nonlinearities the manifestation of hard x-ray nonlinearities differs in both theory and experiment. We investigate the nonlinear effect of parametric down-conversion (PDC) in the x-ray regime, in which an incident x-ray photon is spontaneously converted into a highly correlated photon pair, marking a most prominent example for x-ray quantum optics.

We present a structured analysis of the phase-matching parameter space for PDC in different materials. Furthermore, we have strong evidence that this quantum frequency conversion effect can be used as a local probe of valence electron properties. Possible future applications as a novel spectroscopic method or improved imaging technique are foreseen and presented.