Applications of Parametric-Down Conversion of X rays
Pmetric-down conversion (PDC) has been studied extensively at optical wavelengths. The extension of this effect into X-ray wavelengths offers many advantages due to the high spatial resolution and the extremely low noise of commercial X-ray detectors. My talk comprises of two such applications:
1. Parametric-Down Conversion of X rays into the Optical Regime
Nonlinear interactions of X-rays and optical radiations can provide insight into the microscopic structure of chemical bonds and the valence electron density of crystals and into light-matter interactions at the atomic-scale resolution . We observe parametrically down converted X-ray signal photons that correspond to idler photons at optical wavelengths for the first time . The results demonstrate a new method for probing valence-electron charges and microscopic optical responses of crystals at the atomic-scale resolution.
2. Ghost imaging of X ray paired photons
PDC is one of the major sources for the generation of non-classical states of light. This type of radiation is extensively used to study numerous quantum phenomena at optical wavelengths. Despite the potential for research with X-rays, no application of X-ray PDC generated pairs has been reported. We observe ghost imaging by using parametrically down-converted X-ray photon pairs . We reconstruct the images of slits with nominally zero background levels. Our procedure can lead to the observations of many quantum phenomena at X-ray wavelengths.
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