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. 2021 Oct 29;127(18):180501.
doi: 10.1103/PhysRevLett.127.180501.

Strong Quantum Computational Advantage Using a Superconducting Quantum Processor

Yulin Wu  1   2   3 , Wan-Su Bao  4 , Sirui Cao  1   2   3 , Fusheng Chen  1   2   3 , Ming-Cheng Chen  1   2   3 , Xiawei Chen  2 , Tung-Hsun Chung  1   2   3 , Hui Deng  1   2   3 , Yajie Du  2 , Daojin Fan  1   2   3 , Ming Gong  1   2   3 , Cheng Guo  1   2   3 , Chu Guo  1   2   3 , Shaojun Guo  1   2   3 , Lianchen Han  1   2   3 , Linyin Hong  5 , He-Liang Huang  1   2   3   4 , Yong-Heng Huo  1   2   3 , Liping Li  2 , Na Li  1   2   3 , Shaowei Li  1   2   3 , Yuan Li  1   2   3 , Futian Liang  1   2   3 , Chun Lin  6 , Jin Lin  1   2   3 , Haoran Qian  1   2   3 , Dan Qiao  2 , Hao Rong  1   2   3 , Hong Su  1   2   3 , Lihua Sun  1   2   3 , Liangyuan Wang  2 , Shiyu Wang  1   2   3 , Dachao Wu  1   2   3 , Yu Xu  1   2   3 , Kai Yan  2 , Weifeng Yang  5 , Yang Yang  2 , Yangsen Ye  1   2   3 , Jianghan Yin  2 , Chong Ying  1   2   3 , Jiale Yu  1   2   3 , Chen Zha  1   2   3 , Cha Zhang  1   2   3 , Haibin Zhang  2 , Kaili Zhang  1   2   3 , Yiming Zhang  1   2   3 , Han Zhao  2 , Youwei Zhao  1   2   3 , Liang Zhou  5 , Qingling Zhu  1   2   3 , Chao-Yang Lu  1   2   3 , Cheng-Zhi Peng  1   2   3 , Xiaobo Zhu  1   2   3 , Jian-Wei Pan  1   2   3
Affiliations

Strong Quantum Computational Advantage Using a Superconducting Quantum Processor

Yulin Wu et al. Phys Rev Lett. .

Abstract

Scaling up to a large number of qubits with high-precision control is essential in the demonstrations of quantum computational advantage to exponentially outpace the classical hardware and algorithmic improvements. Here, we develop a two-dimensional programmable superconducting quantum processor, Zuchongzhi, which is composed of 66 functional qubits in a tunable coupling architecture. To characterize the performance of the whole system, we perform random quantum circuits sampling for benchmarking, up to a system size of 56 qubits and 20 cycles. The computational cost of the classical simulation of this task is estimated to be 2-3 orders of magnitude higher than the previous work on 53-qubit Sycamore processor [Nature 574, 505 (2019)NATUAS0028-083610.1038/s41586-019-1666-5. We estimate that the sampling task finished by Zuchongzhi in about 1.2 h will take the most powerful supercomputer at least 8 yr. Our work establishes an unambiguous quantum computational advantage that is infeasible for classical computation in a reasonable amount of time. The high-precision and programmable quantum computing platform opens a new door to explore novel many-body phenomena and implement complex quantum algorithms.

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