Investment Rating - The industry investment rating is "Positive" and maintained [5] Core Viewpoints - The successful development of the "Zu Chongzhi No. 3" prototype, which features 105 qubits (including 105 readable qubits and 182 coupled qubits), marks a significant breakthrough in quantum computing, achieving a speed 15 orders of magnitude faster than the current strongest supercomputers for random circuit sampling tasks [3][4] - China is expected to continue releasing quantum computing achievements, solidifying its leading position in the field, with ongoing research into surface code quantum error correction algorithms [4][8] - Major international tech companies are entering the quantum computing space, indicating that quantum computing may become a key focus area in the technology industry [4][8] Summary by Sections Event Description - On March 3, the University of Science and Technology of China announced the successful construction of the "Zu Chongzhi No. 3" superconducting quantum computing prototype, which can solve quantum random circuit sampling tasks rapidly [3][4] Performance Highlights - The "Zu Chongzhi No. 3" prototype has a coherence time of 72 microseconds, with single-qubit gate fidelity at 99.90%, two-qubit gate fidelity at 99.62%, and readout fidelity at 99.13% [4][8] - It surpasses the latest results published in October 2024 by six orders of magnitude, establishing itself as the strongest quantum computing superiority in the superconducting system [4][8] Industry Outlook - The quantum computing sector is expected to accelerate development, with China focusing on quantum error correction, entanglement, simulation, and quantum chemistry, which will drive the entire quantum technology industry chain [4][8] - The report suggests paying attention to the entire quantum technology industry chain, particularly leading companies in quantum computing and quantum communication [4][8]

Core Viewpoint - The article highlights significant innovations and advancements in the field of photonic integrated chips by the Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, particularly in 2024, showcasing their contributions to basic research and technology development in quantum communication and optical interconnects [1][2]. Group 1: Photonic Integrated Chips - The Xi'an Institute of Optics and Precision Mechanics has made notable progress in the field of integrated optical frequency combs, collaborating with teams from the University of Science and Technology of China and the National University of Defense Technology to achieve a "fully identical" microcavity soliton optical frequency comb with 50 channels meeting the ITU frequency spacing standard of 50GHz, laying the groundwork for scalable quantum communication systems [2]. - The research results were published in *Science Advances* and were featured as a highlight of the issue [3]. Group 2: Silicon-based Optical Interconnects - The research team successfully developed the world's first single-port silicon-based optical interconnect chip with a rate of 2Tbps and a bandwidth density of 4Tbps/mm, marking a significant enhancement in interconnect capabilities and providing a domestic solution for applications in artificial intelligence, high-performance computing, and data centers [5]. - This chip integrates high-performance micro-ring modulators and avalanche photodetectors, overcoming common challenges of high bandwidth, low power consumption, and high reliability [7]. - The development process involved a complete technical chain from theoretical modeling to chip integration, significantly improving device performance and enabling effective support for enhanced computing power in AI applications [7]. Group 3: Metasurface Chips - A generalized theory for polarization optical phase control of metasurfaces was proposed, expanding the theoretical boundaries of polarization control and leading to the development of a quantum state tomography polarization multiplexing metasurface chip [8]. - The research team collaborated with Nanjing University to create a framework that allows independent control of arbitrary polarization states across multiple channels, opening new avenues for multifunctional photonic device development [8]. - Additionally, a metasurface capable of generalized measurement of quantum states was designed, which simplifies the experimental complexity of multi-photon entanglement measurement and enhances the efficiency of quantum state reconstruction [11].