Quantum Theory of Longitudinal-Transverse Polaritons in Nonlocal Thin Films

@article{Gubbin2022QuantumTO,
  title={Quantum Theory of Longitudinal-Transverse Polaritons in Nonlocal Thin Films},
  author={Christopher R. Gubbin and Simone De Liberato},
  journal={Physical Review Applied},
  year={2022}
}
When mid-infrared light interacts with nanoscale polar dielectric structures optical phonon propagation cannot be ignored, leading to a rich nonlocal phenomenology which we have only recently started to uncover. In properly crafted nanodevices this includes the creation of polaritonic excitations with hybrid longitudinal-transverse nature, which are predicted to allow energy funnelling from longitudinal electrical currents to far-field transverse radiation. In this work we study the physics of… 

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