Pulse propagation of photon-added coherent states in waveguides with side-coupled nonlinear cavities.
We present a theoretical analysis of pulse propagation in a waveguide with a side-coupled Kerr nonlinear cavity. As a specific application, we demonstrate how the nonlinearity has a profound influence on transport properties of a photon-added coherent state. We find that the fields provided by the coherent states facilitate a tunable nonlinearity on the few-photon level, allowing for a robust gating of single photons.
Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology (KIT), Wolfgang-Gaede-Strasse 1, 76131 Karlsruhe, Germany. paolo.longo@kit.edu
Paolo
P
Longo
Kurt
K
Busch