Quantum walks on a programmable two-dimensional 62-qubit superconducting processor-Reference-Cited by-同舟云学术

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

Published:2021-05-28 Issue:6545 Volume:372 Page:948-952
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Gong Ming¹²³^ORCID,Wang Shiyu¹²³^ORCID,Zha Chen¹²³^ORCID,Chen Ming-Cheng¹²³^ORCID,Huang He-Liang¹²³^ORCID,Wu Yulin¹²³^ORCID,Zhu Qingling¹²³^ORCID,Zhao Youwei¹²³,Li Shaowei¹²³,Guo Shaojun¹²³,Qian Haoran¹²³,Ye Yangsen¹²³^ORCID,Chen Fusheng¹²³,Ying Chong¹²³^ORCID,Yu Jiale¹²³,Fan Daojin¹²³^ORCID,Wu Dachao¹²³,Su Hong¹²³,Deng Hui¹²³,Rong Hao¹²³^ORCID,Zhang Kaili¹²³,Cao Sirui¹²³^ORCID,Lin Jin¹²³,Xu Yu¹²³^ORCID,Sun Lihua¹²³^ORCID,Guo Cheng¹²³^ORCID,Li Na¹²³,Liang Futian¹²³^ORCID,Bastidas V. M.⁴^ORCID,Nemoto Kae⁵^ORCID,Munro W. J.⁴⁵^ORCID,Huo Yong-Heng¹²³^ORCID,Lu Chao-Yang¹²³^ORCID,Peng Cheng-Zhi¹²³^ORCID,Zhu Xiaobo¹²³^ORCID,Pan Jian-Wei¹²³^ORCID

Affiliation:

1. Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.

2. Shanghai Branch, CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China.

3. Shanghai Research Center for Quantum Sciences, Shanghai 201315, China.

4. NTT Basic Research Laboratories and Research Center for Theoretical Quantum Physics, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan.

5. National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan.

Abstract

Simulating quantum walkers 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

Funder

Natural Science Foundation of Shanghai

National Key Research and Development Program of China Stem Cell and Translational Research

National Science Foundation of China

Anhui Initiative in Quantum Information Technologies

Shanghai Municipal Science and Technology Major Project

Key-Area Research and Development Program of Guangdong Provice

Japanese MEXT Quantum Leap Flagship Program

Technology Committee of Shanghai Municipality

Publisher

American Association for the Advancement of Science (AAAS)

Subject