Welcome to the group website for the Quantum Collective Dynamics in Light-Matter Systems group. We are a research group based in the Physics and Astronomy department at University College London, led by our principal investigator Prof. Marzena Szymańska. Our research focuses on out-of-equilibrium collective phenomena in systems composed of light and matter, with particular interest in exciton-polaritons, cavity and circuit quantum electrodynamics and cold atoms.
PhD scholarship for UK/EU students available! For more information click here. If you are interested, please send us an e-mail.
Research concepts:
- Extending equilibrium phenomena such as superfluidity, turbulence, vortex behaviour and disorder to driven-dissipative ‘Fluids of Light’ condensates
- Phase transitions, critical phenomena and universality classes emerging in non-equilibrium systems
- Symmetry-protected topological models on lattices of spins, fermions or bosons
- Onset of quantum coherence, decoherence and entanglement growth in lattice models
- Development of Tensor Network and Monte-Carlo methods for open quantum systems
Systems we are interested in:
- Semiconductor microcavities, quantum wells and wires, exciton-polaritons
- Circuit and cavity QED systems
- Out-of-equilibrium and open lattice models for bosons, fermions and spins
Methods we use:
- Non-equilibrium field theory, Renormalisation Group, Green’s function methods
- Stochastic phase space methods (Truncated-Wigner Approximation, Positive-P)
- Tensor networks for open quantum systems
- Quantum optics methods (Master Equations, Quantum Jumps, Stochastic Schrödinger Equations)
qlm-ucl.org 