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arXiv 2106.14734quant-ph
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使用超导量子处理器的强量子计算优势

Strong quantum computational advantage using a superconducting quantum processor

Yulin Wu, Wan-Su Bao, Sirui Cao, Fusheng Chen, Ming-Cheng Chen, Xiawei Chen, Tung-Hsun Chung, Hui Deng, Yajie Du, Daojin Fan, Ming Gong, Cheng Guo, Chu Guo, Sha… 展开作者

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

摘要:

通过高精度控制扩展到大量量子位对于量子计算优势的演示至关重要,以指数方式超过经典硬件和算法改进。在这里,我们开发了一个二维可编程超导量子处理器,\textit{Zuchongzhi},它是由66个功能量子位在一个可调耦合架构。为了表征整个系统的性能,我们执行随机量子线路采样用于基准测试,系统大小为56个量子比特和20个周期。该任务的经典模拟的计算成本估计比之前在53量子位Sycamore处理器上的工作高2-3个数量级[Nature \textbf{574},505(2019)]。我们估计,\textit{Zuchongzhi}在1.2小时左右完成的采样任务,最强大的超级计算机至少需要8年。我们的工作建立了一个明确的量子计算优势,这是不可行的经典计算在一个合理的时间。高精度和可编程的量子计算平台为探索新的多体现象和实现复杂的量子算法打开了新的大门。

英文摘要:

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, \textit{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 \textbf{574}, 505 (2019)]. We estimate that the sampling task finished by \textit{Zuchongzhi} in about 1.2 hours will take the most powerful supercomputer at least 8 years. 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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