5 papers
High-harmonic generation driven by temporal-mode quantum states of light
Juan M. González-Monge, Felipe Reibnitz Willemann, Johannes Feist
We develop a theoretical framework for high-harmonic generation (HHG) driven by quantum states of light based on a temporal-mode expansion of the electromagnetic field. This approa…
Close encounters between periodic light and periodic arrays of quantum emitters
Frieder Lindel, Carlos J. Sánchez MartÃnez, 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…
Casimir-Lifshitz Theory for Cavity Modification of Ground-State Energy
Oleg V. Kotov, Johannes Feist, Francisco J. GarcÃa-Vidal +1
A theory for ground-state modifications of matter embedded in a Fabry-Perot cavity and whose excitations are described as harmonic oscillators is presented. Based on Lifshitz's the…
Can Intense Quantum Light Beat Classical Uncertainty Relations?
Felipe Reibnitz Willemann, Mauro Antezza, Johannes Feist
Uncertainty relations are fundamental to quantum mechanics, encoding limits on the simultaneous measurement of conjugate observables. Violations of joint uncertainty bounds can cer…
There is no ultrastrong coupling with photons
Diego Fernández de la Pradilla, Esteban Moreno, Johannes Feist
Theoretical accounts of ultrastrongly coupled light-matter systems commonly assume that it arises from the interaction of an emitter with propagating photon modes supported by a st…