China has made waves in the field of quantum computing with the unveiling of the Tianyan-504, a sophisticated superconducting quantum computer that features the innovative 504-qubit “Xiaohong” chip. This development marks a significant leap forward, showcasing China’s growing prowess in quantum technologies by surpassing the 500-qubit threshold.
The Xiaohong chip is the brainchild of the Center for Excellence in Quantum Information and Quantum Physics, an arm of the prestigious Chinese Academy of Sciences. Once refined, this chip found its new home at QuantumCTek Co., Ltd., a leading company in Anhui Province specializing in quantum technologies. The chip impresses with its specs, offering qubit lifetime, gate accuracy, and quantum circuit depth that compete with top-tier international quantum systems, particularly those accessible via the cloud.
Ambitious plans are underway to incorporate the Tianyan-504 into the broad-reaching “Tianyan” quantum computing cloud platform. This strategic move aims to provide global access to this groundbreaking system. Since its launch in November 2023, the platform has garnered significant attention, boasting over 12 million visits from users across more than 50 countries.
China Telecom Quantum Group, founded in May 2023, collaborates with QuantumCTek to further the development and application of quantum technologies using the Xiaohong chip, building upon China’s string of accomplishments in the quantum arena. Earlier achievements such as the “Jiuzhang 2.0” and “Zuchongzhi 2.1” systems laid the groundwork—Jiuzhang 2.0, for instance, operates with 113 detected photons, and Zuchongzhi 2.1 is equipped with 66 qubits. These initiatives have positioned China as a front-runner with a definitive edge in both photonics and superconducting quantum computing.
This surge in development signifies a promising era for quantum computing in China, potentially transforming the landscape of global technological advancement.






