695 citations · 1.1k across the 33 of their papers we have counts for
34 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…
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…
Enhancement of the Third Harmonic Generation Efficiency of ITO nanolayers coupled to Tamm Plasmon Polaritons
Tornike Shubitidze, Smridhi Chawla, Luca Dal Negro
We study the enhancement of third harmonic generation in indium tin oxide nanolayers coupled to Tamm plasmon polaritons (TPPs). The TPPs are excited at the interface between a thin…
Localization landscape of optical waves in multifractal photonic membranes
Tornike Shubitidze, Yilin Zhu, Hari Sundar +1
In this paper, we investigate the localization properties of optical waves in disordered systems with multifractal scattering potentials. In particular, we apply the localization l…
High-throughput speckle spectrometers based on multifractal scattering media
Bhupesh Kumar, Yilin Zhu, Luca Dal Negro +1
We present compact integrated speckle spectrometers based on monofractal and multifractal scattering media in a silicon-on-insulator platform. Through both numerical and experiment…
Enhanced Nonlinearity of Epsilon-Near-Zero Indium Tin Oxide Nanolayers with Tamm Plasmon-Polariton States
Tornike Shubitidze, Wesley A. Britton, Luca Dal Negro
Recently, materials with vanishingly small permittivity, known as epsilon-near-zero (ENZ) media, emerged as promising candidates to achieve nonlinear optical effects of unprecedent…
Inverse design of functional photonic patches by adjoint optimization coupled to the generalized Mie theory
Yilin Zhu, Yuyao Chen, Sean Gorsky +2
We propose a rigorous approach for the inverse design of functional photonic structures by coupling the adjoint optimization method and the two-dimensional generalized Mie theory (…
Design of ultracompact broadband focusing spectrometers based on deep diffractive neural networks
Yilin Zhu, Yuyao Chen, Luca Dal Negro
We propose the inverse design of ultracompact, broadband focusing spectrometers based on adaptive deep diffractive neural networks (a-DNNs). Specifically, we introduce and char…
Enhanced wave localization in multifractal scattering media
Yuyao Chen, Fabrizio Sgrignuoli, Yilin Zhu +2
In this paper we study the structural, scattering, and wave localization properties of multifractal arrays of electric point dipoles generated from multiplicative random fields wit…
Wave localization in number-theoretic landscapes
Luca Dal Negro, Yilin Zhu, Yuyao Chen +2
We investigate the localization of waves in aperiodic structures that manifest the characteristic multiscale complexity of certain arithmetic functions with a central role in numbe…
Inverse design of ultracompact multi-focal optical devices by diffractive neural networks
Yuyao Chen, Yilin Zhu, Wesley A. Britton +1
We propose an efficient inverse design approach for multifunctional optical elements based on adaptive deep diffractive neural networks (a-DNNs). Specifically, we introduce a-D…
Physics-informed neural networks for imaging and parameter retrieval of photonic nanostructures from near-field data
Yuyao Chen, Luca Dal Negro
In this paper, we develop a deep learning approach for the accurate solution of challenging problems of near-field microscopy that leverages the powerful framework of physics-infor…
Sub-diffusive wave transport and weak localization transition in three-dimensional stealthy hyperuniform disordered systems
Fabrizio Sgrignuoli, Salvatore Torquato, Luca Dal Negro
The purpose of this work is to understand the fundamental connection between structural correlations and light localization in three-dimensional (3D) open scattering systems of fin…
Hyperuniform scalar random fields for lensless, multispectral imaging systems
Yuyao Chen, Wesley A. Britton, Luca Dal Negro
We propose a novel framework for the systematic design of lensless imaging systems based on the hyperuniform random field solutions of nonlinear reaction-diffusion equations from p…
Aperiodic bandgap structures for enhanced quantum two-photon sources
Luca Dal Negro, Yuyao Chen, Sean Gorsky +1
In this paper we propose a novel approach to enhance the efficiency of the two-photon spontaneous emission process that is driven by the multifractal optical mode density of photon…
Wave transport and localization in prime number landscapes
Luca Dal Negro, David Taylor Henderson, Fabrizio Sgrignuoli
In this paper, we study the wave transport and localization properties of novel aperiodic structures that manifest the intrinsic complexity of prime number distributions in imagina…
Structural entropy and spatial decay of quasimodes in Vogel spirals
Marcus Prado, Fabrizio Sgrignuoli, Yuyao Chen +2
We investigate the spatial decay and temporal localization properties of quasimodes (i.e., scattering resonances) of two-dimensional Vogel spirals, composed of deterministic, aperi…
Angular dependence and absorption properties of the anapolemode of Si nano-disks
Lucia Fornasari, Marco Passoni, Franco Marabelli +3
The polarization- and angle- resolved optical response of the anapole mode in silicon nano-disks array have been experimentally and theoretically investigated. The good agreement b…
Phase-modulated axilenses as ultra-compact spectroscopic tools
Wesley A. Britton, Yuyao Chen, Fabrizio Sgrignuoli +1
We design and characterize phase-modulated, ultra-compact, silicon-based axilens devices that combine efficient point focusing and grating selectivity within scalable 4-level phase…
Subdiffusive light transport in three-dimensional subrandom arrays
Fabrizio Sgrignuoli, Luca Dal Negro
We investigate light transport in novel three-dimensional scattering systems generated according to subrandom sequences and demonstrate subdiffusive behavior typical of wave transp…
Design of infrared microspectrometers based on phase-modulated axilenses
Yuyao Chen, Wesley A. Britton, Luca Dal Negro
We design and characterize a novel axilens-based diffractive optics platform that flexibly combines efficient point focusing and grating selectivity and is compatible with scalable…
Physics-informed neural networks for inverse problems in nano-optics and metamaterials
Yuyao Chen, Lu Lu, George Em Karniadakis +1
In this paper we employ the emerging paradigm of physics-informed neural networks (PINNs) for the solution of representative inverse scattering problems in photonic metamaterials a…
Compact localized states of open scattering media
Fabrizio Sgrignuoli, Malte Rontgen, Christian V. Morfonios +2
We study the compact localized scattering resonances of periodic and aperiodic chains of dipolar nanoparticles by combining the powerful Equitable Partition Theorem (EPT) of graph…