Research positions
2025-: Chargé de recherche CNRS (permanent researcher), IPCMS (University of Strasbourg)
2020-2025: Chargé de recherche CNRS (permanent researcher), ISIS-CESQ (University of Strasbourg)
2016-2019: Postdoctoral researcher at University of Strasbourg, France
2013-2015: Postdoctoral researcher at University of Toronto, Canada
2009-2012: PhD thesis, Université Paris Cité, France. Supervisor: Cristiano Ciuti.
Keywords
Cavity quantum electrodynamics; strong light-matter interactions; strong and ultrastrong coupling regimes; polaritons; vibrational strong coupling; quantum transport; chiral light-matter interactions; quantum nanophotonics
Offers
If you would like to get in touch or are interested in working with me for an internship, a PhD, or a postdoctoral position, please feel free to contact me directly by email (david.hagenmuller@ipcms.unistra.fr)
Current research
My research focuses on the theory of strong light-matter interactions, primarily in condensed-matter systems, including crystalline solids and molecular ensembles. These interactions become strong when the coupling between material excitations, such as electronic transitions, optical phonons, or molecular vibrations, and the electromagnetic field is sufficiently large that light and matter can no longer be regarded as separate entities, but instead hybridize to form new collective quantum states known as polaritons. This regime can notably be reached by spatial confinement of the electromagnetic field, thereby enhancing its interaction with matter.
I am particularly interested in developing microscopic models to understand how the electromagnetic environment can be used to control the properties of matter, including charge and energy transport, interactions between its constituents, and collective phenomena. Conversely, I am also interested in how extreme regimes of light-matter interaction can be exploited to engineer the electromagnetic field itself and generate nonclassical states of light.
I work in close collaboration with experimentalists and particularly enjoy interdisciplinary research at the interface of condensed-matter physics, quantum optics, nanophotonics, and physical chemistry. My current research spans cavity quantum electrodynamics and polaritonics, quantum nanoplasmonics, and chiral light-matter interactions.
Publications
My publication list is available on Google Scholar.