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Quantum walks on a programmable two-dimensional 62-qubit superconducting processor
Open accessAbstract
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
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“Recent works reported 2D continuous-time quantum walks of correlated photons, relying on arrays of coupled waveguides 21,38,52 , and important results have been also achieved by means of superconductive quantum processors 6 .”
From Quantum walks of two correlated photons in a 2D synthetic lattice (2022) · cites this paper as [6]
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Metadata
- Authors
- Gong, M., Wang, S., Zha, C., Chen, M.-C., Huang, H.-L., Wu, Y., Zhu, Q., Zhao, Y., Li, S., Guo, S., Qian, H., Ye, Y., Chen, F., Ying, C., Yu, J., Fan, D., Wu, D., Su, H., Deng, H., Rong, H., Zhang, K., Cao, S., Lin, J., Xu, Y., Sun, L., Guo, C., Li, N., Liang, F., Bastidas, V. M., Nemoto, K., Munro, W. J., Huo, Y.-H., Lu, C.-Y., Peng, C.-Z., Zhu, X., & Pan, J.-W.
- Affiliations
- University of Science and Technology of China (CN)
- NTT (Japan) (JP)
- National Institute of Informatics (JP)
- Corresponding author
- Gong, Ming
- Wang, Shiyu
- Zha, Chen
- Zhu, Xiaobo
- Pan, Jian-Wei
- ORCID
- Venue
- Science
- Published
- 2021-05-28
- Volume
- 372
- Issue
- 6545
- Pages
- 948-952
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W3127536809
- Cited by
- 331
- References
- 26
- Citations by year
- 2026: 25 · 2025: 41 · 2024: 60 · 2023: 82 · 2022: 90 · 2021: 33
- FWCI
- 23.42
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Natural Science Foundation of Shanghai (19ZR1462700)
- National Key Research and Development Program of China Stem Cell and Translational Research (2017YFA0304300)
- National Science Foundation of China (11905217, 11774326)
- Anhui Initiative in Quantum Information Technologies
- Shanghai Municipal Science and Technology Major Project (2019SHZDZX01)
- Key-Area Research and Development Program of Guangdong Provice (2020B0303030001)
- Japanese MEXT Quantum Leap Flagship Program (JPMXS0118069605)
- Technology Committee of Shanghai Municipality
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Keywords
- quantum walks, superconducting qubit arrays, programmable quantum processors, Mach-Zehnder interferometer, two-particle quantum walk, interference fringes, disorder tuning, quantum simulation, noisy intermediate-scale quantum computing
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