Quantum walks on a programmable two-dimensional 62-qubit superconducting processor

doi:10.1126/science.abg7812

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DOI	10.1126/science.abg7812
	Quantum walks on a programmable two-dimensional 62-qubit superconducting processor
	Ming Gong; Shiyu Wang; Chen Zha; Ming-Cheng Chen; He-Liang Huang; Yulin Wu; Qingling Zhu; Youwei Zhao; Shaowei Li; Shaojun Guo; Haoran Qian; Yangsen Ye; Fusheng Chen; Chong Ying; Jiale Yu; Daojin Fan; Dachao Wu; Hong Su; Hui Deng; Hao Rong; Kaili Zhang; Sirui Cao; Jin Lin; Yu Xu; Lihua Sun; Cheng Guo; Na Li; Futian Liang; V. M. Bastidas; Kae Nemoto; W. J. Munro; Yong-Heng Huo; Chao-Yang Lu; Cheng-Zhi Peng; Xiaobo Zhu; Jian-Wei Pan
	2021-05-28
发表期刊	Science
出版年	2021
英文摘要	Quantum walks are the quantum mechanical analogs of classical random walks, describing the propagation of a quantum walker across a lattice, and find application in developing algorithms for simulating quantum many-body systems. Gong et al. used an 8-by-8 two-dimensional (2D) superconducting qubit square lattice containing 62 functional qubits to show how multiple (two) walkers traverse a 2D qubit array, interfering as they go. The authors were also able to program the paths that the walkers follow, demonstrating a Mach-Zehnder interferometer in which a single or multiple quantum walkers coherently traverse two paths before interfering and exiting at a single port. The results illustrate the potential for superconducting-based quantum processors in simulating large-scale quantum systems. Science , abg7812, this issue p. [948][1] 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. [1]: /lookup/doi/10.1126/science.abg7812
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/328863
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Ming Gong,Shiyu Wang,Chen Zha,et al. Quantum walks on a programmable two-dimensional 62-qubit superconducting processor[J]. Science,2021.
APA	Ming Gong.,Shiyu Wang.,Chen Zha.,Ming-Cheng Chen.,He-Liang Huang.,...&Jian-Wei Pan.(2021).Quantum walks on a programmable two-dimensional 62-qubit superconducting processor.Science.
MLA	Ming Gong,et al."Quantum walks on a programmable two-dimensional 62-qubit superconducting processor".Science (2021).