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9 March 2022 A stroll through a 62 qubit quantum processor
William J. Munro, 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, Victor Bastidas, Kae Nemoto, Yong-Heng Huo, Chao-Yang Lu, Cheng-Zhi Peng, Xiaobo Zhu, Jian-Wei Pan
Author Affiliations +
Proceedings Volume PC12015, Quantum Computing, Communication, and Simulation II; PC1201506 (2022) https://doi.org/10.1117/12.2610964
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Quantum walks are a well-known powerful technique to perform quantum search algorithms, quantum simulations, and universal quantum computation. They have been extensively explored in the optical regime. In our work we have realized an 8x8 two-dimensional square superconducting qubit array with 62 functional qubits. We have used this processor to demonstrate high fidelity multi-particle quantum walks. The programmability of our processor also allows us to implement a Mach-Zehnder interferometer where quantum walkers can coherently traverse both paths of the interferometer before interfering and exiting it. Our work shows an alternate approach for information processing on these NISQ processors.
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KEYWORDS
Quantum computing
Quantum communications
Computer simulations
Data processing
Interferometers
Mach-Zehnder interferometers
Optical circuits
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