Photons at microwave and optical frequencies are principal carriers for quantum information.
While microwave photons can be effectively controlled at the local circuit level, optical …

The commercial success of radio-frequency acoustic filters in wireless communication
systems has launched aluminum nitride (AlN) as one of the most widely used …

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 …

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 …

Quasi-phase-matched interactions in waveguides with quadratic nonlinearities enable
highly efficient nonlinear frequency conversion. In this paper, we demonstrate the first …

Integrated photonics provides unprecedented opportunities to pursue advanced nonlinear
light sources with low-power consumptions and small footprints in a scalable manner, such …

Frequency microcombs, alternative to mode-locked laser and fiber combs, enable miniature
rulers of light for applications including precision metrology, molecular fingerprinting and …

Quantum photon sources of high rate, brightness, and purity are increasingly desirable as
quantum information systems are quickly scaled up and applied to many fields. Using a …

Integrated photonics based on silicon has drawn a lot of interests, since it is able to provide
compact solution for functional devices, and its fabrication process is compatible with the …

Nonlinear frequency conversion provides essential tools for generating new colors and
quantum states of light. Transition metal dichalcogenides possess huge nonlinear …