2 research outputs found
Single photons versus coherent state input in waveguide quantum electrodynamics: light scattering, Kerr and cross-Kerr effect
While the theoretical studies in waveguide quantum electrodynamics
predominate with single-photon and two-photon Fock state (photon number states)
input, the experiments are primarily carried out using a faint coherent light.
We create a theoretical toolbox to compare and contrast linear and nonlinear
light scattering by a two-level or a three-level emitter embedded in an open
waveguide carrying Fock state or coherent state inputs. We identify rules to
compare light transport properties, the Kerr, and cross-Kerr nonlinearities of
the medium for the two types of inputs. A generalized description of the Kerr
and cross-Kerr effect for different types of inputs is formulated to compare
the Kerr and cross-Kerr nonlinearity between two photons in these models.Comment: 10 pages, 1 figur