Canada's Xanadu Quantum Technologies has developed the world's first scalable optical quantum computer prototype. The company published an article in the latest issue of Nature detailing its design and construction process, and demonstrating how the prototype can be flexibly scaled up to the required scale. This breakthrough lays an important foundation for the development of large-scale quantum computing in the future. The researchers adopted a modular design concept to construct this quantum computer. In the initial stage, they built a basic unit containing a small number of qubits, suitable for the most basic application scenarios. As demand grows, computing power can be expanded by adding more units of the same type. These units work together through a network to form a large computer. Each newly added unit or quantum server rack will increase the overall processing capacity. Researchers point out that thousands of such units can be connected through fiber optic cables to create large quantum computers with enormous processing power. Due to the fact that the entire system is based on photon technology, there is no need to combine photon components with traditional electronic components. To validate this concept, researchers constructed a prototype system consisting of four server racks. The system uses 84 compressors to form a computer with 12 physical qubits. Among them, the first rack is equipped with an input laser, while the other three racks contain five main subsystems: quantum bit generation source, quantum bit storage buffer, optimization system for improving quality and generating entangled states, routing system for assisting entanglement and clustering, and quantum processing unit for executing the final computing task. Especially, as the system is entirely based on photon technology, it can operate at room temperature without the need for cooling equipment. Researchers tested the performance of the system by creating a unique entangled state. The experimental results are satisfactory, indicating that the system can not only perform complex large-scale computing tasks, but also has a high degree of fault tolerance. This achievement not only demonstrates the enormous potential of quantum computing, but also provides new directions and possibilities for future technological development. (New Society)