Nonlinear optical spectroscopy with nonclassical light, photon counting detection and extreme wavelengths techniques

I will show how new quantum phenomena in complex systems can be studied and controlled using advances in both quantum optics and nonlinear spectroscopy. In particular I demonstrate how to probe and control the dynamics of the complex excitonic systems using quantum light and reveal the information, which is not accessible by conventional classical photonics. I further show the power of the time-and-frequency resolved photon counting techniques that complement existing multidimensional optical techniques. I will finally utilize the newly developed X-ray Stimulated Raman spectroscopies to control electron transfer processes and collect information about molecular systems such as conical intersections, core and valence dynamics with the attosecond precision.

Figure: A pair of entangled photons showing strong time-frequency correlations (left) is directed onto a molecular aggregate (center), and one transmitted beam is frequency-dispersed and detected. The resulting signal (right) can be controlled by the correlations.