54 citations · 241 across the 11 of their papers we have counts for
5 papers · 1 filter
Reflection by two level system: phase singularities on the Poincaré hypersphere
Ben Lang, Edmund Harbord, Ruth Oulton
We consider the reflection of a photon by a two-level system in a quasi-one-dimensional waveguide. This is important in part because it forms the backdrop for more complicated prop…
Perfect Chirality with imperfect polarisation
Ben Lang, Dara P. S. McCutcheon, Edmund Harbord +2
Unidirectional (chiral) emission of light from a circular dipole emitter into a waveguide is only possible at points of perfect circular polarisation (C points), with elliptical po…
Optimised photonic crystal waveguide for chiral light-matter interactions
Ben Lang, Ruth Oulton, Daryl M. Beggs
We present slow-light photonic crystal waveguide designs that provide a 8.6 improvement of the local density of optical states at a fully chiral point over previous designs…
Time reversal constraint limits unidirectional photon emission in slow-light photonic crystals
Ben Lang, Daryl M. Beggs, Ruth Oulton
Photonic crystal waveguides are known to support C-points - point-like polarisation singularities with local chirality. Such points can couple with dipole-like emitters to produce…
The stability of polarisation singularities in disordered photonic crystal waveguides
Ben Lang, Daryl M. Beggs, Andrew B. Young +2
The effects of short range disorder on the polarisation characteristics of light in photonic crystal waveguides were investigated using finite difference time domain simulations wi…