Details

Autor(en) / Beteiligte

• Gong, Ming
• Wang, Shiyu
• Zha, Chen
• Chen, Ming-Cheng
• Huang, He-Liang
• Wu, Yulin
• Zhu, Qingling
• Zhao, Youwei
• Li, Shaowei
• Guo, Shaojun
• Qian, Haoran
• Ye, Yangsen
• Chen, Fusheng
• Ying, Chong
• Yu, Jiale
• Fan, Daojin
• Wu, Dachao
• Su, Hong
• Deng, Hui
• Rong, Hao
• Zhang, Kaili
• Cao, Sirui
• Lin, Jin
• Xu, Yu
• Sun, Lihua
• Guo, Cheng
• Li, Na
• Liang, Futian
• Bastidas, V M
• Nemoto, Kae
• Munro, W J
• Huo, Yong-Heng
• Lu, Chao-Yang
• Peng, Cheng-Zhi
• Zhu, Xiaobo
• Pan, Jian-Wei

Titel

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

Ist Teil von

• Science (American Association for the Advancement of Science), 2021-05, Vol.372 (6545), p.948-952

Ort / Verlag

United States: The American Association for the Advancement of Science

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• 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 8x8 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 an essential milestone in the field, brings future larger scale quantum applications closer to realization on these noisy intermediate-scale quantum processors.