Among all the existing quantum computing technologies, photonic quantum computers (PQC) are the only chip-scale solution possible to work at room temperature and readily compatible with nowadays semiconductor and optical communication network systems. In this technique, we aim to develop fault-tolerant non-Gaussian state photonic integrated quantum computing chips by combining core technologies of integrated quantum light sources, quantum metrology, silicon photonics, quantum state validation, quantum error code correction, and photon number resolving detectors, a critical step toward a cutting-edge practical PQC.

Fault-tolerant universal quantum computing remains a critical scientific research topic. This study aims to achieve this scientific breakthrough by realizing non-Gaussian continuous variable quantum states with error-correcting capabilities, combined with key technologies such as advanced photonic integrated circuits and photon number resolving detectors. To date, our team has demonstrated world-class achievements, including entangled quantum light sources in various dimensions (including time-frequency qudits), optical Schrödinger cat state generators, on-chip vacuum squeezer, machine-learning enhanced quantum state tomography, near room-temperature single-pixel single-photon detectors with five-photon state resolution, efficient multiphot

Three key hardware components have been developed for realizing our proposed photonic quantum computing technology, including photonic qubit sources, linear optical quantum circuits, and single-photon detectors. These components can all be highly integrated using advanced integrated photonic (silicon photonics) chip technology. This technology has broad applications not only in quantum computing, quantum communications, and quantum sensing, but also in next-generation optical communications, lidar, medicine, defense, and aerospace industries. Furthermore, the quantum state reconstruction and error-correction schemes developed by our team can also accelerate the commercialization of optical quantum computing and promote the development of th