P. Longo and K Busch (2012)
Pulse propagation of photon-added coherent states in waveguides with side-coupled nonlinear cavities
Optics Letters, 37:1793.
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.