The quest towards the integration of ultra-fast, high-precision optical clocks is reflected in the
large number of high-impact papers on the topic published in the last few years. This interest …

Abstract 2D layered materials (2DLMs) are a subject of intense research for a wide variety of
applications (eg, electronics, photonics, and optoelectronics) due to their unique physical …

Random numbers are a fundamental resource in science and engineering with important
applications in simulation and cryptography. The inherent randomness at the core of …

Focus Serial: Frontiers of Nonlinear Optics Several kinds of nonlinear optical effects have
been observed in recent years using silicon waveguides, and their device applications are …

Nonlinear optical processes are one of the most important tools in modern optics with a
broad spectrum of applications in, for example, frequency conversion, spectroscopy, signal …

Recent developments in quantum photonics have initiated the process of bringing photonic-
quantumbased systems out-of-the-lab and into real-world applications. As an example …

Optical frequency conversion has applications ranging from tunable light sources to
telecommunications-band interfaces for quantum information science. Here, we demonstrate …

Assisted by the rapid development of photonic integrated circuits, scalable and versatile chip-
based quantum light sources with nonlinear optics are increasingly tangible for real-world …

We perform quantum key distribution (QKD) over a single fibre in the presence of four
classical channels in a C-band dense wavelength division multiplexing (DWDM) …

We study theoretically the generation of photon pairs by spontaneous four-wave mixing
(SFWM) in photonic crystal optical fiber. We show that it is possible to engineer two-photon …