Multiple emitters in a waveguide: Nonreciprocity and correlated photons at perfect elastic transmission
Journal Article (Journal Article)
We investigate interference and correlation effects when several detuned emitters are placed along a one-dimensional photonic waveguide. Such a setup allows multiple interactions between the photons and the strongly coupled emitters, and underlies proposed devices for quantum information processing. We show, first, that a pair of detuned two-level systems (2LS) separated by a half wavelength mimic a driven Λ-type three-level system (3LS) in both the single- and two-photon sectors. There is an interference-induced transparency peak at which the fluorescence is quenched, leaving the transmitted photons completely uncorrelated. Slightly away from this separation, we find that the inelastic scattering (fluorescence) is large, leading to nonlinear effects such as nonreciprocity (rectification). We connect this nonreciprocity to inelastic scattering caused by driving a dark pole and so derive a condition for maximum rectification. Finally, by placing a true 3LS midway between the two 2LS, we show that elastic scattering produces only transmission, but inelastic scattering nevertheless occurs (the fluorescence is not quenched) causing substantial photon correlations.
Full Text
Duke Authors
Cited Authors
- Fang, YLL; Baranger, HU
Published Date
- July 21, 2017
Published In
Volume / Issue
- 96 / 1
Electronic International Standard Serial Number (EISSN)
- 2469-9934
International Standard Serial Number (ISSN)
- 2469-9926
Digital Object Identifier (DOI)
- 10.1103/PhysRevA.96.013842
Citation Source
- Scopus