PsiQuantum has developed a manufacturable platform for photonic quantum computing, demonstrating high-fidelity photonic qubit generation, manipulation, and detection. The platform uses monolithically-integrated silicon photonics-based modules to generate, manipulate, network, and detect photonic qubits, achieving 99.98% state preparation and measurement fidelity, 99.50% visibility in Hong-Ou-Mandel quantum interference, 99.22% fidelity in two-qubit fusion, and 99.72% fidelity in chip-to-chip qubit interconnects. The platform includes next-generation technologies such as low-loss silicon nitride waveguides, fabrication-tolerant photon sources, high-efficiency photon-number-resolving detectors, low-loss chip-to-fiber coupling, and barium titanate electro-optic phase shifters. The platform is built on a commercial semiconductor foundry using a fully-integrated 300mm silicon photonics process flow. It includes single-photon sources, waveguide-integrated superconducting single-photon detectors, single-qubit state preparation and measurement (SPAM), chip-to-chip qubit interconnects, two-photon quantum interference, and two-qubit fusion, all at telecom wavelengths. These components are fabricated in a commercial semiconductor foundry using a fully-integrated 300mm silicon photonics process flow, with all operations on-chip. The platform also includes next-generation components such as a novel spontaneous single photon source, integrated, high-efficiency photon-number-resolving detectors, low-loss silicon nitride (SiN) waveguides and components, low-loss fiber-to-chip edge coupling, and waveguide-integrated barium titanate (BTO) electro-optic phase shifters. The platform demonstrates high performance in photon sources, detection, interferometers, and filters, with high-fidelity SPAM, two-photon quantum interference, and two-qubit fusion. The platform also includes integrated heralded single photon generation and quantum benchmarking circuits, demonstrating high performance in single-qubit, two-qubit, and chip-to-chip qubit interconnect performance. The platform is designed for fault-tolerant quantum computing, with high-performance components that can be manufactured at scale. The platform includes low-loss silicon nitride waveguides, directional couplers, and crossings, with demonstrated single-mode SiN waveguide loss of 1.58 dB/m and multimode waveguide loss of 0.39 dB/m. The platform also includes fiber-to-chip coupling with low-loss, and electro-optic switching with high-speed, low-loss phase shifters. The platform is designed for scalability and flexibility, with component arrangements that are highly configurable, making it suitable for different variations of quantum computer architectures and other photonic technologies. The platform is expected to enable large optical networks with rapid reconfiguration based on previous results. The platform is expected to havePsiQuantum has developed a manufacturable platform for photonic quantum computing, demonstrating high-fidelity photonic qubit generation, manipulation, and detection. The platform uses monolithically-integrated silicon photonics-based modules to generate, manipulate, network, and detect photonic qubits, achieving 99.98% state preparation and measurement fidelity, 99.50% visibility in Hong-Ou-Mandel quantum interference, 99.22% fidelity in two-qubit fusion, and 99.72% fidelity in chip-to-chip qubit interconnects. The platform includes next-generation technologies such as low-loss silicon nitride waveguides, fabrication-tolerant photon sources, high-efficiency photon-number-resolving detectors, low-loss chip-to-fiber coupling, and barium titanate electro-optic phase shifters. The platform is built on a commercial semiconductor foundry using a fully-integrated 300mm silicon photonics process flow. It includes single-photon sources, waveguide-integrated superconducting single-photon detectors, single-qubit state preparation and measurement (SPAM), chip-to-chip qubit interconnects, two-photon quantum interference, and two-qubit fusion, all at telecom wavelengths. These components are fabricated in a commercial semiconductor foundry using a fully-integrated 300mm silicon photonics process flow, with all operations on-chip. The platform also includes next-generation components such as a novel spontaneous single photon source, integrated, high-efficiency photon-number-resolving detectors, low-loss silicon nitride (SiN) waveguides and components, low-loss fiber-to-chip edge coupling, and waveguide-integrated barium titanate (BTO) electro-optic phase shifters. The platform demonstrates high performance in photon sources, detection, interferometers, and filters, with high-fidelity SPAM, two-photon quantum interference, and two-qubit fusion. The platform also includes integrated heralded single photon generation and quantum benchmarking circuits, demonstrating high performance in single-qubit, two-qubit, and chip-to-chip qubit interconnect performance. The platform is designed for fault-tolerant quantum computing, with high-performance components that can be manufactured at scale. The platform includes low-loss silicon nitride waveguides, directional couplers, and crossings, with demonstrated single-mode SiN waveguide loss of 1.58 dB/m and multimode waveguide loss of 0.39 dB/m. The platform also includes fiber-to-chip coupling with low-loss, and electro-optic switching with high-speed, low-loss phase shifters. The platform is designed for scalability and flexibility, with component arrangements that are highly configurable, making it suitable for different variations of quantum computer architectures and other photonic technologies. The platform is expected to enable large optical networks with rapid reconfiguration based on previous results. The platform is expected to have