All Outputs (6)

Reflection by two level system: phase singularities on the Poincaré hypersphere (2023)
Journal Article
Lang, B., Harbord, E., & Oulton, R. (2023). Reflection by two level system: phase singularities on the Poincaré hypersphere. Journal of Optics, 25(12), Article 125403. https://doi.org/10.1088/2040-8986/ad065a

We consider the reflection of a photon by a two-level system in a quasi-one-dimensional waveguide. The waveguide polarisation at the location of the two-level system and the transition dipole are key determinants of the physics, controlling of the ph... Read More about Reflection by two level system: phase singularities on the Poincaré hypersphere.

Discrete time translation symmetry breaking in a Josephson junction laser (2023)
Journal Article
Lang, B., Morley, G. F., & Armour, A. D. (2023). Discrete time translation symmetry breaking in a Josephson junction laser. Physical review B: Condensed matter and materials physics, 107(14), Article 144509. https://doi.org/10.1103/PhysRevB.107.144509

A Josephson junction laser is realized when a microwave cavity is driven by a voltage-biased Josephson junction. Through the ac Josephson effect, a dc voltage generates a periodic drive that acts on the cavity and generates interactions between its m... Read More about Discrete time translation symmetry breaking in a Josephson junction laser.

Optimised photonic crystal waveguide for chiral light–matter interactions (2017)
Journal Article
Lang, B., Oulton, R., & Beggs, D. M. (2017). Optimised photonic crystal waveguide for chiral light–matter interactions. Journal of Optics, 19(4), Article 045001. https://doi.org/10.1088/2040-8986/aa5f5f

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 (2016)
Journal Article
Lang, B., Beggs, D. M., & Oulton, R. (2016). Time-reversal constraint limits unidirectional photon emission in slow-light photonic crystals. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 374(2075), https://doi.org/10.1098/rsta.2015.0263

Photonic crystal waveguides are known to support C-points—point-like polarization singularities with local chirality. Such points can couple with dipole-like emitters to produce highly directional emission, from which spin-photon entanglers can be bu... Read More about Time-reversal constraint limits unidirectional photon emission in slow-light photonic crystals.

Stability of polarization singularities in disordered photonic crystal waveguides (2015)
Journal Article
Lang, B., Beggs, D. M., Young, A. B., Rarity, J. G., & Oulton, R. (2015). Stability of polarization singularities in disordered photonic crystal waveguides. Physical Review A, 92(6), Article 063819. https://doi.org/10.1103/physreva.92.063819

The effects of short-range disorder on the polarization characteristics of light in photonic crystal waveguides were investigated using finite-difference time-domain simulations with a view to investigating the stability of polarization singularities... Read More about Stability of polarization singularities in disordered photonic crystal waveguides.

Closed sets of correlations: answers from the zoo (2014)
Journal Article
Lang, B., Vértesi, T., & Navascués, M. (2014). Closed sets of correlations: answers from the zoo. Journal of Physics A: Mathematical and Theoretical, 47(42), Article 424029. https://doi.org/10.1088/1751-8113/47/42/424029

We investigate the conditions under which a set of multipartite nonlocal correlations can describe the distributions achievable by distant parties conducting experiments in a consistent universe. Several questions are posed, such as: are all such set... Read More about Closed sets of correlations: answers from the zoo.