8 papers
Quantum Theory of Third-harmonic Generation in Epsilon-Near-Zero Materials
Sonia Alipour, Riccardo Franchi, Tornike Shubitidze +3
We present a theoretical framework, based on the Green's tensor quantization method, to describe third-harmonic generation in epsilon-near-zero (ENZ) materials and derive analytica…
Component structure and percolation in block models
Riccardo Franchi, M. E. J. Newman
The stochastic block model is a widely studied model of community structure in networks. Here we study the component structure and percolation properties of networks generated from…
Mid-Infrared Single-Photon Detection via Enhanced Cross-Phase Modulation in Topology-Optimized Epsilon-Near-Zero Dual-Wavelength Nanocavities
Luca Dal Negro, Riccardo Franchi, Marco Ornigotti
We use the Green's tensor quantization theory for open resonant nanostructures with absorption losses to study cross-phase modulation (XPM) at the single-photon level in nanoscale…
Structural and physical properties of gyromorphs and disordered stealthy hyperuniform media
Murray Skolnick, Riccardo Franchi, Luca Dal Negro +2
Disordered stealthy hyperuniform materials combine liquid-like statistical isotropy with crystal-like homogeneity, suppressed density fluctuations at large length scales, bounded h…
On-Chip Interferometric Excitation of an Infinity-Loop Microresonator
Davide Olivieri, Bülent Aslan, Stefano Biasi +2
Integrated photonics is a powerful platform for exploring Hermitian and non-Hermitian physics. Beyond device geometry, controlling how resonators are driven is crucial to access an…
Nonlinear Quantum Electrodynamics of Epsilon-Near-Zero Nanocavities
Luca Dal Negro, Riccardo Franchi, Marco Ornigotti
We investigate single-photon nonlinear refractive index change and frequency shift of Epsilon-Near-Zero (ENZ) sub-wavelength nanocavities. We apply the rigorous quantum Langevin-no…