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195 papers · 1 filter
Path integral quantization of the electromagnetic field in nonlinear dielectric materials
Arman Kashef, Oscar Perearnau Herrero, Alexander Szameit +2
We construct a quantum theory of light in nonlinear dielectric media with dispersion and absorption. We employ a mesoscopic model for the light-matter interaction that include a fo…
High-harmonic generation from two weakly coupled molecules: a simple tight-binding model
Lina Bielke, Samuel Schöpa, Falk-Erik Wiechmann +2
The generation of high harmonics is a strongly nonlinear effect that allows to probe properties of the target and to study electron dynamics in matter. It has been investigated in…
Multipole expansion for dispersion forces -- watch this trace
Jivesh Kaushal, Chris Boldt, Stefan Scheel +2
Light-matter interaction models invariably rely on the multipole expansion of the electromagnetic potentials generated by complex charge distributions. These multipoles are typical…
Selective reflection Casimir-Polder spectroscopy in vapor cells: the influence of the thermal velocity distribution
B. Dutta, C. Boldt, G. Garcia-Arellano +4
Selective reflection is a high-resolution spectroscopic method that allows the probing of atomic and molecular gases in the near field of dielectric cell windows. It is a sensitive…
Phase structure of below-threshold harmonics in aligned molecules: a few-level model system
Samuel Schöpa, Falk-Erik Wiechmann, Franziska Fennel +1
We utilize few-level model systems to analyze the polarization and phase properties of below-threshold harmonics generated from aligned molecules. In a two-level system, we find th…
Selective Filtering of Photonic Quantum Entanglement via Anti-Parity-Time Symmetry
Mahmoud A. Selim, Max Ehrhardt, Yuqiang Ding +8
Entanglement is a key resource for quantum computing, sensing, and communication, however it is highly susceptible to decoherence. To address this, quantum optics has explored filt…