539 citations · 5k across the 71 of their papers we have counts for
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Nonclassical Light from Exciton Interactions in a Two-Dimensional Quantum Mirror
Valentin Walther, Lida Zhang, Susanne F. Yelin +1
Excitons in a semiconductor monolayer form a collective resonance that can reflect resonant light with extraordinarily high efficiency. Here, we investigate the nonlinear optical p…
Asymmetric Rydberg blockade of giant excitons in Cuprous Oxide
Julian Heckötter, Valentin Walther, Stefan Scheel +3
The ability to generate and control strong long-range interactions via highly excited electronic states has been the foundation for recent breakthroughs in a host of areas, from at…
Plasma-enhanced interaction and optical nonlinearities of CuO Rydberg excitons
Valentin Walther, Thomas Pohl
We theoretically investigate the nonlinear optical transmission through a cuprous oxide crystal for wavelengths that cover the series of highly excited excitons, observed in recent…