BACKGROUND Singularities are critical points for which the behavior of a mathematical
model governing a physical system is of a fundamentally different nature compared to the …

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 …

The growth of computing needs for artificial intelligence and machine learning is critically
challenging data communications in today's data-centre systems. Data movement …

Over the past decade, optical frequency combs generated by high-Q microresonators, or
optical microcombs, which feature compact device footprints, low power consumption, and …

A laser is based on the electromagnetic modes of its resonator, which provides the feedback
required for oscillation. Enormous progress has been made toward controlling the …

On-chip optical resonators have the promise of revolutionizing numerous fields, including
metrology and sensing; however, their optical losses have always lagged behind those of …

On-chip resonators are promising candidates for applications in a wide range of integrated
photonic fields, such as communications, spectroscopy, biosensing, and optical filters, due …

Self-organized solitons confined to an optical resonator would offer unique capabilities for
experiments in communication, computation and sensing with light. Here, we report the …

The generation of Kerr frequency combs in a coherently driven nonlinear microresonator is
now extensively investigated more generally by the research community as a potentially …

Microresonator frequency combs can be an enabling technology for optical frequency
synthesis and timekee** in low size, weight, and power architectures. Such systems …