275 citations · 997 across the 17 of their papers we have counts for
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A Hierarchical Approach to Quantum Many-Body Systems in Non-Markovian Environments
Kai Müller, Kimmo Luoma, Christian Schäfer
Quantum many-body systems in cavities combine the rich physics of condensed matter systems or quantum chemistry with strong coupling to the surrounding electromagnetic field. In th…
Collective Strong Coupling Modifies Aggregation and Solvation
Matteo Castagnola, Tor S. Haugland, Enrico Ronca +2
Intermolecular interactions are pivotal for aggregation, solvation, and crystallization. We demonstrate that the collective strong coupling of several molecules to a single optical…
Optimizing Variational Quantum Algorithms with qBang: Efficiently Interweaving Metric and Momentum to Navigate Flat Energy Landscapes
David Fitzek, Robert S. Jonsson, Werner Dobrautz +1
Variational quantum algorithms (VQAs) represent a promising approach to utilizing current quantum computing infrastructures. VQAs are based on a parameterized quantum circuit optim…
Chiral Polaritonics: Analytic Solutions, Intuition and its Use
Christian Schäfer, Denis G. Baranov
Preferential selection of a given enantiomer over its chiral counterpart becomes increasingly relevant in the advent of the next era of medical drug design. In parallel, cavity qua…
Dynamic of Single Molecules in Collective Light-Matter States from First Principles
Christian Schäfer
The coherent interaction of a large collection of molecules with a common photonic mode results in strong light-matter coupling, a feature that proved highly beneficial for chemist…
A Shortcut to Self-Consistent Light-Matter Interaction and Realistic Spectra from First-Principles
Christian Schäfer, Göran Johansson
We introduce a simple approach how an electromagnetic environment can be efficiently embedded into state-of-the-art electronic structure methods, taking the form of radiation-react…
Making ab initio QED functional(s): Non-perturbative and photon-free effective frameworks for strong light-matter coupling
Christian Schäfer, Florian Buchholz, Markus Penz +2
Strong light-matter coupling provides a promising path for the control of quantum matter where the latter is routinely described from first-principles. However, combining the quant…
Shining Light on the Microscopic Resonant Mechanism Responsible for Cavity-Mediated Chemical Reactivity
Christian Schäfer, Johannes Flick, Enrico Ronca +2
Strong light-matter interaction in cavity environments is emerging as a promising approach to control chemical reactions in a non-intrusive and efficient manner. The underlying mec…
Ab-initio Optimized Effective Potentials for Real Molecules in Optical Cavities: Photon Contributions to the Molecular Ground state
Johannes Flick, Christian Schäfer, Michael Ruggenthaler +2
We introduce a simple scheme to efficiently compute photon exchange-correlation contributions due to the coupling to transversal photons as formulated in the newly developed quantu…