[entangled Quantum Light Source on Chip Integration is expected to become a basic component of Programmable Optical Quantum processor] April 21, an international research team of German and Dutch scientists completely integrated a quantum light source capable of emitting entangled photons on a single chip for the first time, reducing the size of the quantum light source to less than 1x1000 of the current equipment, achieving longer-term stability and scalability. At the same time, it can also be produced on a large scale, which is expected to become the basic component of programmable optical quantum processor and reduce the cost of quantum technology application. The research was published in the 17th issue of the journal Nature Photonics.