700 citations · 4.8k across the 126 of their papers we have counts for
17 papers · 1 filter
Low-Temperature Collapse of Electron Localisation in Two Dimensions
M. Baenninger, A. Ghosh, M. Pepper +3
We report direct experimental evidence that the insulating phase of a disordered, yet strongly interacting two-dimensional electron system (2DES) becomes unstable at low temperatur…
Field-tunable magnetic phases in a semiconductor-based two-dimensional Kondo lattice
C. Siegert, A. Ghosh, M. Pepper +4
We show the existence of intrinsic localized spins in mesoscopic high-mobility GaAs/AlGaAs heterostructures. Non-equilibrium transport spectroscopy reveals a quasi-regular distribu…
Sensitivity of the magnetic state of a spin lattice on itinerant electron orbital phase
C. Siegert, A. Ghosh, M. Pepper +4
Spatially extended localized spins can interact via indirect exchange interaction through Friedel oscillations in the Fermi sea. In arrays of localized spins such interaction can l…
Oxide-apertured microcavity single-photon emitting diode
D. J. P. Ellis, A. J. Bennett, A. J. Shields +2
We have developed a microcavity single-photon source based on a single quantum dot within a planar cavity in which wet-oxidation of a high-aluminium content layer provides lateral…
Observation of the Purcell effect in high-index-contrast micropillar
A. J. Bennett, D. J. P. Ellis, A. J. Shields +3
We have fabricated pillar microcavity samples with Bragg mirrors consisting of alternate layers of GaAs and Aluminium Oxide. Compared to the more widely studied GaAs/AlAs micropill…
Experimental position-time entanglement with degenerate single photons
A. J. Bennett, D. G. Gevaux, Z. L. Yuan +3
We report an experiment in which two-photon interference occurs between degenerate single photons that never meet. The two photons travel in opposite directions through our fibre-o…