BACKGROUND Semiconductor materials feature optical and electronic properties that can
be engineered through their composition and crystal structure. The use of semiconductors …

Quantum technologies comprise an emerging class of devices capable of controlling
superposition and entanglement of quantum states of light or matter, to realize fundamental …

Quantum theory has been successfully validated in numerous laboratory experiments. But
would such a theory, which effectively describes the behavior of microscopic physical …

Single-photon emitters play an important role in many leading quantum technologies. There
is still no'ideal'on-demand single-photon emitter, but a plethora of promising material …

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

Single photons are a fundamental element of most quantum optical technologies. The ideal
single-photon source is an on-demand, deterministic, single-photon source delivering light …

Recent developments in chip-based photonic quantum circuits have radically impacted
quantum information processing. However, it is challenging for monolithic photonic platforms …

In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

In the context of quantum technologies, the generation and manipulation of single photons
has become a key element for applications such as quantum communication and quantum …

An optimal single-photon source should deterministically deliver one, and only one, photon
at a time, with no trade-off between the source's efficiency and the photon …