54 citations · 241 across the 11 of their papers we have counts for
11 papers
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…
Discrete time translation symmetry breaking in a Josephson junction laser
Ben Lang, Grace F. Morley, Andrew D. Armour
A Josephson junction laser is realised when a microwave cavity is driven by a voltage-biased Josephson junction. Through the ac Josephson effect, a dc voltage generates a periodic…
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…
Josephson Photonics with Simultaneous Resonances
Kieran Wood, Andrew D. Armour, Ben Lang
Inelastic Cooper pair tunneling across a voltage-biased Josephson junction in series with one or more microwave cavities can generate photons via resonant processes in which the en…
Multi-Photon Resonances in Josephson Junction-Cavity Circuits
Ben Lang, Andrew D. Armour
We explore the dissipative dynamics of nonlinearly driven oscillator systems tuned to resonances where multiple excitations are generated. Such systems are readily realised in circ…
Collectively enhanced chiral photon emission from an atomic array near a nanofiber
Ryan Jones, Giuseppe Buonaiuto, Ben Lang +2
Emitter ensembles interact collectively with the radiation field. In the case of a one-dimensional array of atoms near a nanofiber, this collective light-matter interaction does no…
99% beta factor and directional coupling of quantum dots to fast light in photonic crystal waveguides determined by hyperspectral imaging
L. Scarpelli, B. Lang, F. Masia +8
Spontaneous emission from excitonic transitions in InAs/GaAs quantum dots embedded in photonic crystal waveguides at 5K into non-guided and guided modes is determined by direct hyp…
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…
Closed sets of correlations: answers from the zoo
Ben Lang, Tamas Vertesi, Miguel Navascues
We investigate the conditions under which a set of multipartite nonlocal correlations can describe the distributions achievable by distant parties conducting experiments in a consi…