Optical microcombs represent a new paradigm for generating laser frequency combs based
on compact chip-scale devices, which have underpinned many modern technological …

Optical metasurfaces, ie arrays of nanoantennas with sub-wavelength size and separation,
enable the manipulation of light-matter interactions in miniaturized optical components with …

The absence of the single-photon nonlinearity has been a major roadblock in develo**
quantum photonic circuits at optical frequencies. In this paper, we demonstrate a periodically …

Lithium niobate (LN), dubbed by many as the silicon of photonics, has recently risen to the
forefront of chip-scale nonlinear optics research since its demonstration as an ultralow-loss …

Gallium phosphide (GaP) is an indirect-bandgap semiconductor used widely in solid-state
lighting. Despite numerous intriguing optical properties—including large χ (2) and χ (3) …

We present all-dielectric gallium phosphide (GaP) nanoantennas as an efficient
nanophotonic platform for surface-enhanced second harmonic generation (SHG) and …

Fast, high efficiency and low error single-photon sources are required for the implementation
of a number of quantum information processing applications. The fastest triggered single …

Photonic integrated circuits hold promise as miniaturized and scalable platforms for classical
and quantum photonic information processing. Second-order nonlinearity (χ^(2)) is the basis …

Highly tunable coherent light generation is crucial for many important photonic applications.
Second-harmonic generation (SHG) is a dominant approach for this purpose, which …

With the development of laser technology and related scientific fields, understanding of the
structure–property relationships in nonlinear optical (NLO) crystals is becoming more and …