Recent years have witnessed significant progress in quantum communication and quantum
internet with the emerging quantum photonic chips, whose characteristics of scalability …

Quantum key distribution (QKD) constitutes a symmetric secret key negotiation protocol
capable of maintaining information-theoretic security. Given the recent advances in QKD …

Integrated photonics has profoundly affected a wide range of technologies underpinning
modern society,,–. The ability to fabricate a complete optical system on a chip offers …

Lasers and optical amplifiers based on solution-processable materials have been long-
desired devices for their compatibility with virtually any substrate, scalability, and ease of …

Integrated photonics will play a key role in quantum systems as they grow from few-qubit
prototypes to tens of thousands of qubits. The underlying optical quantum technologies can …

In principle, quantum key distribution (QKD) offers information-theoretic security based on
the laws of physics. In practice, however, the imperfections of realistic devices might …

The silicon nitride (Si 3 N 4) planar waveguide platform has enabled a broad class of low-
loss planar-integrated devices and chip-scale solutions that benefit from transparency over a …

Photonic quantum technologies represent a promising platform for several applications,
ranging from long-distance communications to the simulation of complex phenomena …

High quality-factor (Q) optical resonators are a key component for ultra-narrow linewidth
lasers, frequency stabilization, precision spectroscopy and quantum applications. Integration …

Quantum key distribution is a matured quantum science and technology. Over the last 20
years, there has been substantial research and development in this area. Recently, silicon …