We work on microcavity physics: the quantum coupling of light and matter in a cavity of micrometric size (realized with alternating layers of semiconductors).

The cavity can sandwich an entire plane, in which case the physics is in 2D, or it can circle around a single, atom-like object, typically a quantum dot, in which case it is 0D. (We focus on these two cases but 1D and 3D are also possible).

The 2D case is interesting for macroscopic degeneracy, with a lot of particles acting as one, with outreaches such as Bose-Einstein condensation, superfluidity, superconductivity, etc.

The 0D case is interesting for microscopic isolation, with a few quanta of excitations ruling the dynamics of the system, with outreaches such as entanglement, quantum information processing, etc.

Below is a picture of a spectral shape for a quantum dot in a microcavity in the nonlinear regime, with, superimposed, the so-called Jaynes-Cummings ladder, an insight into full-field quantization, where also the optical field is quantized, an extreme you don't usually require for most theoretical descriptions. This is this regime which interests us particularly.

You can see our most notable publications or what we've been up to recently on the arXiv.