Tel: +44 (0) 20 7679 3746
Room 231 Wilkins Building
Department of Physics and Astronomy
University College London
Gower Street, London WC1E 6BT, UK.
My research interests
I am interested in the superfluid properties of microcavity-polaritons, which are quasi-particles that result from the strong-coupling of cavity photons and quantum well excitons. Experimental observations have shown polaritons to exhibit aspects of superfluid behaviour, like suppressed scattering and quantised vortices. However, superfluidity is more complicated in non-equilibrium systems like polaritons because the system must be driven by a laser, which affects the excitation spectrum and consequently the flow properties. I study superfluidity in polaritons by using Keldysh field theory, which allows the construction of path integrals in non-equilibrium systems, to calculate the response functions of the system.
Directional Goldstone waves in polariton condensates close to equilibrium
D. Ballarini, D. Caputo, G. Dagvadorj, R. Juggins, M. De Giorgi, L. Dominici, K. West, L. N. Pfeiffer, G. Gigli, M. H. Szymanska, and D. Sanvitto
Coherently driven microcavity-polaritons and the question of superfluidity
R. T. Juggins, J. Keeling and M. H. Szymańska
Nature Comms. 9, 4062 (2018)