Research

Finite arrangements of functionalized nanoparticles

We work with a host of building blocks consisting of nanoparticles (TiO₂ , IrO_x, SnO₂ , Ag, Au, InP, ...) and ligands (light-responsive and structural) to assemble small colloidal arrangements with varying functions (e.g. photocatalysts, polaritonic states). We use magnetic resonance methods to help characterize structure and function.

Multidimensional time-resolved spectroscopy

We resort to time-resolved spectroscopies to understand how excited states evolve and are dissipated. We develop theoretical descriptions of two-dimensional electronic spectroscopy, entangled light spectroscopy, and specific magnetic resonance sequences for nanomaterials. The ultrafast experiments corresponding to this theory are carried out at Lund University.

Open quantum systems

We build toy models that capture the essential physics of systems with a discrete (i.e. molecular) and continuous (i.e. conduction band) structure. We identify the quantum optics effects analogues that are possible and how they can be used in photocatalysis.

Theory

Arne Keller (Paris Diderot)

Vladimiro Mujica (ASU)

Mónica Calatayud (UPMC)

Joakim Halldin (Stanford)