Few-photon Transport in Fano-resonance waveguide geometries
- URL: http://arxiv.org/abs/2001.05773v2
- Date: Thu, 16 Apr 2020 15:13:32 GMT
- Title: Few-photon Transport in Fano-resonance waveguide geometries
- Authors: Kristoffer B. Joanesarson, Jake Iles-Smith, Mikkel Heuck, and Jesper
M{\o}rk
- Abstract summary: We present a theoretical study of Fano interference effects in few-photon transport.
A local defect in an optical waveguide induces a highly asymmetric transmission lineshape, characteristic of Fano interference.
We show how the Fano interference effect can be exploited for the implementation of a Hong-Ou-Mandel switch.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We present a theoretical study of Fano interference effects in few-photon
transport. Under appropriate conditions, a local defect in an optical waveguide
induces a highly asymmetric transmission lineshape, characteristic of Fano
interference. For a two-level emitter placed adjacent to such a defect, here
modeled as a partially transmitting element, we find an analytical expression
for the full time evolution of single-photon wavepackets and the emitter
excitation probability. We show how the partially transmitting element affects
the emitter lifetime and shifts the spectral position of the effective system
resonances. Using input-output formalism, we determine the single and
two-photon $ S $-matrices for both a two-level emitter and a cavity-emitter
system coupled to a waveguide with a partially transmitting element. We show
how the Fano interference effect can be exploited for the implementation of a
Hong-Ou-Mandel switch in analogy with a tunable linear or nonlinear beam
splitter.
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