The PsiQuantum team has developed a manufacturable platform for photonic quantum computing, addressing the challenges of low noise, ease of operation, and networking. The platform integrates monolithically-integrated silicon photonics-based modules for generating, manipulating, networking, and detecting photonic qubits. Key demonstrations include: - **State Preparation and Measurement**: Dual-rail photonic qubits with 99.98% ± 0.01% fidelity. - **Quantum Interference**: Hong-Ou-Mandel (HOM) interference between independent photon sources with 99.50% ± 0.25% visibility. - **Two-Qubit Fusion**: 99.22% ± 0.12% fidelity. - **Chip-to-Chip Interconnect**: 99.72% ± 0.04% fidelity (excluding loss). The team also previews next-generation technologies, including 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. These advancements aim to overcome the limitations of the baseline platform, such as high propagation loss in silicon waveguides and complex tuning requirements for photon sources. The platform's flexibility and scalability make it suitable for various quantum computing architectures and applications.The PsiQuantum team has developed a manufacturable platform for photonic quantum computing, addressing the challenges of low noise, ease of operation, and networking. The platform integrates monolithically-integrated silicon photonics-based modules for generating, manipulating, networking, and detecting photonic qubits. Key demonstrations include: - **State Preparation and Measurement**: Dual-rail photonic qubits with 99.98% ± 0.01% fidelity. - **Quantum Interference**: Hong-Ou-Mandel (HOM) interference between independent photon sources with 99.50% ± 0.25% visibility. - **Two-Qubit Fusion**: 99.22% ± 0.12% fidelity. - **Chip-to-Chip Interconnect**: 99.72% ± 0.04% fidelity (excluding loss). The team also previews next-generation technologies, including 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. These advancements aim to overcome the limitations of the baseline platform, such as high propagation loss in silicon waveguides and complex tuning requirements for photon sources. The platform's flexibility and scalability make it suitable for various quantum computing architectures and applications.