| Literature DB >> 33958483 |
Ming Gong1,2,3, Shiyu Wang1,2,3, Chen Zha1,2,3, Ming-Cheng Chen1,2,3, He-Liang Huang1,2,3, Yulin Wu1,2,3, Qingling Zhu1,2,3, Youwei Zhao1,2,3, Shaowei Li1,2,3, Shaojun Guo1,2,3, Haoran Qian1,2,3, Yangsen Ye1,2,3, Fusheng Chen1,2,3, Chong Ying1,2,3, Jiale Yu1,2,3, Daojin Fan1,2,3, Dachao Wu1,2,3, Hong Su1,2,3, Hui Deng1,2,3, Hao Rong1,2,3, Kaili Zhang1,2,3, Sirui Cao1,2,3, Jin Lin1,2,3, Yu Xu1,2,3, Lihua Sun1,2,3, Cheng Guo1,2,3, Na Li1,2,3, Futian Liang1,2,3, V M Bastidas4, Kae Nemoto5, W J Munro4,5, Yong-Heng Huo1,2,3, Chao-Yang Lu1,2,3, Cheng-Zhi Peng1,2,3, Xiaobo Zhu6,2,3, Jian-Wei Pan6,2,3.
Abstract
Quantum walks are the quantum mechanical analog of classical random walks and an extremely powerful tool in quantum simulations, quantum search algorithms, and even for universal quantum computing. In our work, we have designed and fabricated an 8-by-8 two-dimensional square superconducting qubit array composed of 62 functional qubits. We used this device to demonstrate high-fidelity single- and two-particle quantum walks. Furthermore, with the high programmability of the quantum processor, we implemented a Mach-Zehnder interferometer where the quantum walker coherently traverses in two paths before interfering and exiting. By tuning the disorders on the evolution paths, we observed interference fringes with single and double walkers. Our work is a milestone in the field, bringing future larger-scale quantum applications closer to realization for noisy intermediate-scale quantum processors.Year: 2021 PMID： 33958483 DOI： 10.1126/science.abg7812
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728