Abstract Second-order (χ (2)) optical nonlinearity is one of the most common mechanisms for
modulating and generating coherent light in photonic devices. Due to strong photon …

Optical parametric oscillators (OPOs) have been widely used for decades as tunable, narrow-
linewidth, and coherent light sources for reaching long wavelengths and are attractive for …

We report enhanced optical nonlinear effects at the surface of an ultrahigh-Q silica
microcavity functionalized by a thin layer of organic molecules. The maximal conversion …

High quality factor optical microcavities have been employed in a variety of material systems
to enhance nonlinear optical interactions. While single-crystalline aluminum nitride …

Making analogy with atomic physics is a powerful tool for photonic technology, witnessed by
the recent development in topological photonics and non-Hermitian photonics based on …

In an optomechanical system, we experimentally engineer the optical density of state to
reduce or broaden the effective linewidth of the optical mode by introducing an ancillary …

We demonstrate parametric all-optical modulation in a periodically poled lithium niobate
microring resonator on a chip. It uses quantum Zeno blockade between two distinct waves, a …

We present a mechanism that harnesses extremely weak Kerr-type nonlinearities in a single
driven cavity to deterministically generate single-photon Fock states and more general …

Photonic platforms with χ^(2) nonlinearity offer new degrees of freedom for Kerr frequency
comb development. Here, we demonstrate Kerr soliton generation at 1550? nm with phase …

A category of optical microring resonator, which is analogous to the Möbius strip, is
proposed. The “Möbius” microring resonator allows the conversion between modes with …