576 citations · 3.8k across the 51 of their papers we have counts for
51 papers
Nonlocal-nonlinear phonon polaritons
Gonzalo Álvarez-Pérez, Line Jelver, Alexander Paarmann +1
When light is confined to deeply subwavelength volumes, optical responses can become nonlocal. Yet how nonlocality reshapes nonlinear light-matter interactions remains largely unex…
Exciton-Tunable Phase Control and Superstrong Coupling Through Multimode Polariton Engineering in Planar Waveguides
Johannes Bürger, Erika Cortese, Simone Di Muzio +3
Strong light-matter coupling in optical waveguides provides a versatile platform for engineering hybrid polaritonic modes and their dispersion. Here we investigate multimode excito…
Long-range mid-infrared energy transfer mediated by hyperbolic phonon polaritons
Gonzalo Álvarez-Pérez, Simone De Liberato, Huatian Hu
We provide a framework to theoretically describe long-range energy transfer in single and twisted two-dimensional hyperbolic slabs. We demonstrate that phonon polaritons (PhPs, qua…
Non-equilibrium Electrical Generation of Surface Phonon Polaritons
Christopher Richard Gubbin, Stanislas Angebault, Joshua D. Caldwell +1
Notwithstanding its relevance to many applications in sensing, security, and communications, electrical generation of narrow-band mid-infrared light remains highly challenging. Unl…
Nonperturbative cavity quantum electrodynamics: is the Jaynes-Cummings model still relevant?
Daniele De Bernardis, Alberto Mercurio, Simone De Liberato
In this tutorial review, we briefly discuss the role that the Jaynes-Cummings model occupies in present-day research in cavity quantum electrodynamics with a particular focus on th…
Sculpting ultrastrong light-matter coupling through spatial matter structuring
Joshua Mornhinweg, Laura Diebel, Maike Halbhuber +6
The central theme of cavity quantum electrodynamics is the coupling of a single optical mode with a single matter excitation, leading to a doublet of cavity polaritons which govern…
An engineered planar plasmonic reflector for polaritonic mode confinement
Shima Rajabali, Josefine Enkner, Erika Cortese +4
It was recently demonstrated that, in deep subwavelength gap resonators coupled to two-dimensional electron gases, coupling to propagating plasmons can lead to energy leakage and p…
Positronium density measurements using polaritonic effects
Erika Cortese, David B. Cassidy, Simone De Liberato
Recent experimental advances in Positronium (Ps) physics have made it possible to produce dense Ps ensembles in which Ps-Ps interactions may occur, leading to the production of Ps$…
Perspective on real-space nanophotonic field manipulation using non-perturbative light-matter coupling
Erika Cortese, Joshua Mornhinweg, Rupert Huber +2
The achievement of large values of the light-matter coupling in nanoengineered photonic structures can lead to multiple photonic resonances contributing to the final properties of…
Electrical Generation of Surface Phonon Polaritons
Christopher R. Gubbin, Simone De Liberato
Efficient electrical generation of mid-infrared light is challenging because of the dearth of materials with natural dipole-active electronic transitions in this spectral region. O…
Exact solution of polaritonic systems with arbitrary light and matter frequency-dependent losses
Erika Cortese, Simone De Liberato
In this paper we perform the exact diagonalization of a light-matter strongly coupled system taking into account arbitrary losses via both energy dissipation in the optically activ…
Highly nonlinear dipolar exciton-polaritons in bilayer MoS
Biswajit Datta, Mandeep Khatoniar, Prathmesh Deshmukh +5
Realizing nonlinear optical response in the low photon density limit in solid-state systems has been a long-standing challenge. Semiconductor microcavities in the strong coupling r…
Perspective: Phonon polaritons for infrared optoelectronics
Christopher R. Gubbin, Simone De Liberato, Thomas G. Folland
In recent years there has been significant fundamental research into phonon polaritons, owing to their ability to compress light to extremely small dimensions, low-losses, and abil…
Quantum theory of longitudinal-transverse polaritons in nonlocal thin films
Christopher R. Gubbin, Simone De Liberato
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 on…
Nonlocal Scattering Matrix Description of Anisotropic Polar Heterostructures
Christopher R. Gubbin, Simone De Liberato
Polar dielectrics are a promising platform for mid-infrared nanophotonics, allowing for nanoscale electromagnetic energy confinement in oscillations of the crystal lattice. We rece…
Excitons bound by photon exchange
Erika Cortese, Linh Tran, Jean-Michel Manceau +5
In contrast to interband excitons in undoped quantum wells, doped quantum wells do not display sharp resonances due to excitonic bound states. In these systems the effective Coulom…
Strong coupling of ionising transitions
Erika Cortese, Iacopo Carusotto, Raffaele Colombelli +1
We demonstrate that a ionising transition can be strongly coupled to a photonic resonance. The strong coupling manifests itself with the appearance of a narrow optically active res…
Hybrid Longitudinal-Transverse Phonon Polaritons
Christopher R. Gubbin, Rodrigo Berté, Michael A. Meeker +6
We demonstrate how to exploit long-cell polytypes of silicon carbide to achieve strong coupling between transverse phonon polaritons and zone folded longitudinal optical phonons. T…
Second harmonic generation from strongly coupled localized and propagating phonon-polariton modes
Ilya Razdolski, Nikolai Christian Passler, Christopher R. Gubbin +8
We experimentally investigate second harmonic generation from strongly coupled localized and propagative phonon polariton modes in arrays of silicon carbide nanopillars. Our result…
Open quantum systems with local and collective incoherent processes: Efficient numerical simulation using permutational invariance
Nathan Shammah, Shahnawaz Ahmed, Neill Lambert +2
The permutational invariance of identical two-level systems allows for an exponential reduction in the computational resources required to study the Lindblad dynamics of coupled sp…
Resonant intersubband polariton-LO phonon scattering in an optically pumped polaritonic device
J-M. Manceau, L. Tran, G. Biasiol +6
We report experimental evidence of longitudinal optical (LO) phonon-intersubband polariton scattering processes under resonant injection of light. The scattering process is resonan…
Resolution of superluminal signalling in non-perturbative cavity quantum electrodynamics
Carlos Sánchez Muñoz, Franco Nori, Simone De Liberato
Recent technological developments have made it increasingly easy to access the non-perturbative regimes of cavity quantum electrodynamics known as ultra or deep strong coupling, wh…
Experimental verification of the very strong coupling regime in a GaAs quantum well microcavity
Sebastian Brodbeck, Simone De Liberato, Matthias Amthor +5
When the coupling between light and matter becomes comparable to the energy gap between different excited states they hybridize, leading to the appearance of a rich and complex phe…
Superradiance with local phase-breaking effects
Nathan Shammah, Neill Lambert, Franco Nori +1
We study the superradiant evolution of a set of two-level systems spontaneously radiating under the effect of phase-breaking mechanisms. We investigate the dynamics generated b…