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20242026
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quant-ph2026

Close encounters between periodic light and periodic arrays of quantum emitters

Frieder Lindel, Carlos J. Sánchez Martínez, Johannes Feist +1

We introduce crystal polaritons, hybrid excitations formed when the collective excitations of a periodic quantum-emitter array strongly couple to the resonant Bloch modes of a meta…

quant-ph2026

Optimally driving multi-photon transitions in the perturbative single-mode regime

Frieder Lindel, Stefan Yoshi Buhmann, Andreas Buchleitner +1

The rate of -photon transitions in matter, induced by an incident light field, depends on the field's th order coherence function. Consequently, the coherence properties of t…

quant-ph2025

Experimentally separating vacuum fluctuations from source radiation

Alexa Herter, Frieder Lindel, Laura Gabriel +2

The unique distinction between vacuum-field and source-radiation induced effects in processes such as the Lamb shift, Casimir forces or spontaneous emission, remains unresolved eve…

quant-ph2024

Spatially resolved photon statistics of general nanophotonic systems

Maksim Lednev, Diego Fernández de la Pradilla, Frieder Lindel +3

While experimental measurements of photon correlations have become routine in laboratories, theoretical access to these quantities for the light generated in complex nanophotonic d…

quant-ph2024

General theory of cavity-mediated interactions between low-energy matter excitations

Carlos J. Sánchez Martínez, Frieder Lindel, Francisco J. García-Vidal +1

The manipulation of low-energy matter properties such as superconductivity, ferromagnetism and ferroelectricity via cavity quantum electrodynamics engineering has been suggested as…