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 …

We investigate nonreciprocal photon correlations in coupled microring resonators with
directional quantum squeezing (quantum parametric amplification). We show that the …

We demonstrate quasi-phase matched, triply-resonant sum frequency conversion in 10.6-
µm-diameter integrated gallium phosphide ring resonators. A small-signal, waveguide-to …

Pockels and Kerr effects are linear and nonlinear electro-optical effects, respectively, used in
many applications. The modulation of the refractive index is employed in different photonic …

Reflection occurs when light impinges on an interface between two distinct media.
Suppression of the reflection is of paramount significance to practical applications in …

The solid high quality (Q) factor whispering gallery mode microcavities are demonstrated as
an excellent experimental platform for enhanced light–matter interactions, and are applied in …

Nonlinear strong coupling in the frequency conversion process is an emerging field and has
recently become accessible in integrated photonic platforms. Here we study the strong …

The nonlinear coupling between on-chip confined optical modes and free-space continuum
modes is investigated. The radiation of second-harmonic wave due to the pump fields in …

With the advancement of modulation technology and the requirement for device
miniaturization and integration, lithium niobate on insulator (LNOI) can be a versatile …

Ultrahigh quality factor (Q) microcavities have been emerging as appealing compact
photonic platforms for various applications. The Q factor plays a critical role in determining …