In this review, we present the theoretical foundations and first-principles frameworks to
describe quantum matter within quantum electrodynamics (QED) in the low-energy regime …

J-aggregates are fascinatingfluorescent nanomaterials formed by highly ordered assembly
of organic dyes with the spectroscopic properties dramatically different from that of single or …

This is a tutorial-style introduction to the field of molecular polaritons. We describe the basic
physical principles and consequences of strong light–matter coupling common to molecular …

The demonstration of strong and ultrastrong coupling regimes of cavity QED with polyatomic
molecules has opened new routes to control chemical dynamics at the nanoscale. We show …

Conventional spectroscopy uses classical light to detect matter properties through the
variation of its response with frequencies or time delays. Quantum light opens up new …

Molecular potential energy surfaces can be actively manipulated by light. This is usually
done by strong classical laser light but was recently demonstrated for the quantum field in an …

Conventional nonlinear spectroscopy uses classical light to detect matter properties through
the variation of its response with frequencies or time delays. Quantum light opens up new …

Light-matter strong coupling involving ground-state molecular vibrations is investigated for
the first time in the liquid phase for a set of molecules placed in microcavities. By tuning the …

The interaction of organic molecules and molecular aggregates with electromagnetic fields
that are strongly confined in nanoscale optical cavities has allowed the observation of exotic …

Organic microcavities can be engineered to reach exotic quantum regimes of strong and
ultrastrong light-matter coupling. However, the microscopic interpretation of their …