Integrated optical components on lithium niobate play a major role in standard high-speed
communication systems. Over the last two decades, after the birth and positioning of …

The ability to determine the joint spectral properties of photon pairs produced by the
processes of spontaneous parametric downconversion (SPDC) and spontaneous four-wave …

All-dielectric optical metasurfaces are a workhorse in nano-optics, because of both their
ability to manipulate light in different degrees of freedom and their excellent performance at …

Here we present a roadmap on Photonic metasurfaces. This document consists of a number
of perspective articles on different applications, challenge areas or technologies underlying …

Entanglement—one of the most delicate phenomena in nature—is an essential resource for
quantum information applications. Scalable photonic quantum devices must generate and …

We report, for the first time, the observation of spontaneous parametric down-conversion
(SPDC) free of phase matching (momentum conservation). We alleviate the need to …

Integrated optical devices will play a central role in the future development of nonlinear
quantum photonics. Here we consider the generation of nonclassical states of light within …

Time correlated photon pairs are used to produce heralded single photon states for quantum
integrated circuits. These states are generated by photon sources, which are called …

Silicon photonics is a technology based on fabricating integrated optical circuits by using the
same paradigms as the dominant electronics industry. After twenty years of fervid …

Chip-integrated nonlinear photonics holds the key for advanced optical information
processing with superior performance and novel functionalities. Here, we present an …