How can we manipulate quantum materials via strong light-matter coupling in cavities?

SPICE Workshop on Quantum Spinoptics, June 13th - 15th 2023

Martin Eckstein

Enhancing the light-matter coupling in cavities provides an intriguing route to control properties of matter, from chemical reactions to transport and thermodynamic phase transitions. Order parameters which couple linearly to the electromagnetic field, such as ferroelectricity, incommensurate charge density waves, or exciton condensates, appear most suitable in this context, but the possible mechanisms are not well understood in many cases. In this talk, I will discuss possibilities to manipulate interactions and band structures in a solid via the quantum fluctuations of the electromagnetic field. These results generalize the well-established Floquet engineering of correlated electrons to the regime of quantum light.