Photonics on thin-film lithium niobate (TFLN) has emerged as one of the most pursued
disciplines within integrated optics. Ultracompact and low-loss optical waveguides and …

Lithium niobate on insulator (LNOI), by taking advantage of versatile properties of lithium
niobate (LN) and a large refractive index contrast, provides an ideal on-chip platform for …

Due to its properties, lithium niobate is one of the most suitable material platforms for the
implementation of integrated optical quantum circuits. With the commercialization of lithium …

The rapid development of optical metasurfaces, 2D ensembles of engineered
nanostructures, is presently underpinning a steady drive toward the miniaturization of many …

This article reviews recent progress in quasi-phasematched $\chi^{(2)} $ nonlinear
nanophotonics, with a particular focus on dispersion-engineered nonlinear interactions …

ScAlN is an emerging ferroelectric material that possesses large bandgap and strong
piezoelectricity and holds great promises for enhanced χ (2) nonlinearity. In this study, we …

Second-harmonic generation (SHG) extensively employs periodically poled nonlinear
crystals through forward quasi-phase-matching to achieve efficient frequency conversion. As …

Nonlinear and quantum optical devices based on periodically-poled thin film lithium niobate
(PP-TFLN) have gained considerable interest lately, due to their significantly improved …

Nonlinear optical interactions involving counter-propagating photons are of great interest for
both classical and quantum optical applications. However, their use is sparsely spread due …

In nonlinear optical systems, the optical superposition principle breaks down. The system's
response (including electric polarization, current density, etc) is not proportional to the …