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 …

Lithium Niobate (LN) is an important nonlinear optical material. Here we demonstrate LN
microdisk resonators that feature optical quality factor~ 10^ 5, realized using robust and …

Thin-film lithium-niobate-on-insulator (LNOI) has emerged as a superior integrated-
photonics platform for linear, nonlinear, and electro-optics. Here we combine quasi-phase …

High complexity, dense integrated nanophotonic circuits possessing strong non-linearities
are desirable for a breadth of applications in classical and quantum optics. In this work, we …

The lithium niobate integrated photonic platform has recently shown great promise in
nonlinear optics on a chip scale. Here, we report second-harmonic generation in a high-Q …

We reveal a unique broadband natural quasi-phase-matching (QPM) mechanism underlying
an observation of highly efficient second-and third-order harmonic generation at multiple …

Chip-scale implementations of second-order nonlinear optics benefit from increased optical
confinement that can lead to nonlinear interaction strengths that are orders of magnitude …

Boosting second-order optical nonlinear frequency conversion over subwavelength
thickness has long been pursued through optical resonance in micro-and nanophotonics …

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

Microresonators of ultrahigh quality (Q) factors represent a crucial type of photonic devices
aiming at ultra-high spectral resolution, ultra-high sensitivity to the environmental …