The integration of functional nanomaterials and heterostructures with photonic architectures
has laid the foundation for important photonic and optoelectronic applications. The advent of …

Non-Hermitian optics is a burgeoning field at the intersection of quantum physics,
electrodynamics, and nanophotonics. It provides a new perspective of the role of gain and …

Stable and efficient guided waves are essential for information transmission and processing.
Recently, topological valley-contrasting materials in condensed matter systems have been …

On‐chip light amplification with integrated optical waveguide fabricated on erbium‐doped
thin‐film lithium niobate on insulator (TFLNOI) is demonstrated using the photolithography …

Acoustic resonances in open systems, which are usually associated with resonant modes
characterized by complex eigenfrequencies, play a fundamental role in manipulating …

Nonlinear responses are actively studied as probes of topology and band geometric
properties of solids. Here, we show that second harmonic generation serves as a probe of …

Harnessing parity–time symmetry with balanced gain and loss profiles has created a variety
of opportunities in electronics from wireless energy transfer to telemetry sensing and …

Noise is a fundamental challenge for sensors deployed in daily environments for ambient
sensing, health monitoring, and wireless networking. Current strategies for noise mitigation …

Dynamically encircling exceptional points (EPs) have unveiled intriguing chiral dynamics in
photonics. However, the traditional approach based on an open manifold of Hamiltonian …

A highly efficient on-chip acousto-optic modulator is as a key component and occupies an
exceptional position in microwave-to-optical conversion. Homogeneous thin-film lithium …