Hefei Startup and USTC Demonstrate 16-Qubit On-Chip Photonic MBQC Architecture - Quantum Computing Report

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Hefei Startup and USTC Demonstrate 16-Qubit On-Chip Photonic MBQC Architecture

Conceptual illustration of the proposed approach and circuit.

Chinese startup Hefei Guizhen Chip Technology Co., Ltd. (硅臻芯片), in collaboration with Professor Ren Xifeng‘s team at the Chinese Academy of Sciences (CAS) Key Laboratory of Quantum Information at the University of Science and Technology of China (USTC), has published research demonstrating a 16-qubit measurement-based quantum computing (MBQC) system on a single silicon photonic chip. Detailed in an August 2026 pre-print (“On-chip generation of multi-qubit graph states with high-dimensional encoded single photons“), the experiment achieved a 98.7% average identification probability executing Grover’s search algorithm across four search targets—outperforming the prior 4-qubit on-chip photonic MBQC benchmark of 80.8% set by the University of Stuttgart (“Measurement-Based Quantum Computing on a Photonic Chip“).