Integrated photonics provides a powerful approach for developing compact, stable, and
scalable architectures for the generation, manipulation, and detection of quantum states of …

Assisted by the rapid development of photonic integrated circuits, scalable and versatile chip-
based quantum light sources with nonlinear optics are increasingly tangible for real-world …

Chip-integrated nonlinear photonics holds the key for advanced optical information
processing with superior performance and novel functionalities. Here, we present an …

Interference, which refers to the phenomenon associated with the superposition of waves,
has played a crucial role in the advancement of physics and finds a wide range of …

The demand for integrated photonic chips combining the generation and manipulation of
quantum states of light is steadily increasing, driven by the need for compact and scalable …

Optical quantum communication technologies are making the prospect of unconditionally
secure and efficient information transfer a reality. The possibility of generating and reliably …

Normalized correlation functions provide expedient means for determining the photon-
number properties of light. These higher-order moments, also called the normalized factorial …

We present here results of the Quantum Technology Flagship project UNIQORN in the area
of integrated photonics for quantum communication applications. Three distinct integration …

Entangled photon pairs are an important resource for many types of quantum protocols.
Semiconductor Bragg-reflection waveguides are a promising photon-pair source due to …

High-dimensional quantum entanglement is an important resource for emerging quantum
technologies such as quantum communication and quantum computation. The scalability of …