Revolutionizing Quantum Computing: Introducing Zuchongzhi-3
A groundbreaking development in the world of quantum computing has emerged from the University of Science and Technology of China (USTC). The research team at USTC has unveiled a cutting-edge superconducting quantum computing prototype known as Zuchongzhi-3. This remarkable prototype operates with an impressive 105 qubits and 182 couplers, showcasing a computational speed that surpasses the fastest supercomputer currently in existence by an astonishing 1015 times. What sets Zuchongzhi-3 apart is its performance, which is a staggering one million times faster than the most recent advancements made by tech giant Google.
Advancing Quantum Computation Performance
The creation of Zuchongzhi-3 marks a significant leap forward in the realm of quantum computation. Quantum supremacy, a crucial milestone in quantum computing, is achieved when a quantum computer can tackle calculations or solve problems that are practically impossible for even the most powerful classical supercomputers to complete within a reasonable timeframe.
In a notable comparison, Google’s 53-qubit Sycamore processor took 200 seconds to complete a random circuit sampling task in 2019. This task would have taken approximately 10,000 years for the world’s top supercomputer to accomplish.
Surpassing Quantum Computational Supremacy
In a remarkable turn of events, the USTC research team outperformed Google’s quantum supremacy claims using more advanced classical algorithms in 2023. By employing over 1,400 A100 GPUs, the team completed the same task in just 14 seconds. With the enhanced capabilities of Frontier supercomputers, the task was accomplished in a mere 1.6 seconds, effectively overturning Google’s previous assertion of quantum computational supremacy.
The team’s journey towards quantum supremacy began with the introduction of the “Jiuzhang” photonic quantum computing prototype in 2020. This was followed by the Zuchongzhi-2 processor in 2021, marking the team’s initial foray into the superconducting quantum system.
Unveiling Zuchongzhi-3: A Quantum Leap in Performance
Building upon their prior successes, the USTC team introduced the Zuchongzhi-3 quantum processor featuring 105 qubits and 182 couplers. With a coherence time of 72 microseconds, a single-qubit gate fidelity of 99.90%, a two-qubit gate fidelity of 99.62%, and a readout fidelity of 99.13%, Zuchongzhi-3 demonstrates enhanced capabilities for complex operations and computations.
The team conducted an 83-qubit, 32-layer random circuit sampling task to assess Zuchongzhi-3’s performance. The results were astounding, showcasing a computational speed that surpassed the world’s most powerful supercomputer by an impressive 15 orders of magnitude. Additionally, Zuchongzhi-3 outperformed Google’s latest achievements from October the previous year by 6 orders of magnitude.
Future Endeavors in Quantum Computing
Following this monumental achievement, the USTC team is focused on advancing research in quantum error correction, quantum entanglement, quantum simulation, quantum chemistry, and other key areas. By integrating the surface code and exploring quantum error correction with a distance-7 surface code, the team aims to expand the integration and manipulation of quantum bits by increasing the distance to 9 and 11.
Their groundbreaking work has garnered widespread acclaim, with one journal reviewer describing it as ‘benchmarking a new superconducting quantum computer with state-of-the-art performance’ and a ‘significant upgrade from the previous 66-qubit device (Zuchongzhi-2).’
Journal Reference
- Dongxin Gao et al., Establishing a New Benchmark in Quantum Computational Advantage with 105-qubit Zuchongzhi 3.0 Processor, Physical Review Letters (2025). DOI: 10.1103/PhysRevLett.134.090601
