Advances in Chip?Scale Quantum Photonic Technologies

Quantum photonic system has made remarkable achievements in computing and communication. Serving as quantum information carriers, photons are flying qubits robust against decoherence, emerging a desirable platform to make processor reality. However, with system's complexity functionality scaling up, the requirements for stability, programmability, manufacturability will be high demand. Integrated photonics, compatible complementary metal-oxide-semiconductor fabrication, overwhelming dominance terms of density performance, making it an unrivaled contender large-scale processing (QIP). To improve performance individual blocks integrate them on common substrate is one core tasks practical processor. Here, recent advances components that constitute systems silicon photonics platform, including sources, modulators, detectors reviewed. Burgeoning applications, such multi-dimensional, multi-photon QIP integrated key distribution highlighted.