Giant optical nonlinearities from Rydberg excitons in semiconductor microcavities

  title={Giant optical nonlinearities from Rydberg excitons in semiconductor microcavities},
  author={Valentin Walther and R Robert Johne and Thomas Pohl},
  journal={Nature Communications},
The realization of exciton polaritons—hybrid excitations of semiconductor quantum well excitons and cavity photons—has been of great technological and scientific significance. In particular, the short-range collisional interaction between excitons has enabled explorations into a wealth of nonequilibrium and hydrodynamical effects that arise in weakly nonlinear polariton condensates. Yet, the ability to enhance optical nonlinearities would enable quantum photonics applications and open up a new… 

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