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Scalable algorithm simplification using quantum AND logic

Authors :
Chu, Ji
He, Xiaoyu
Zhou, Yuxuan
Yuan, Jiahao
Zhang, Libo
Guo, Qihao
Hai, Yongju
Han, Zhikun
Hu, Chang-Kang
Huang, Wenhui
Jia, Hao
Jiao, Dawei
Liu, Yang
Ni, Zhongchu
Pan, Xianchuang
Qiu, Jiawei
Wei, Weiwei
Yang, Zusheng
Zhang, Jiajian
Zhang, Zhida
Zou, Wanjing
Chen, Yuanzhen
Deng, Xiaowei
Deng, Xiuhao
Hu, Ling
Li, Jian
Tan, Dian
Xu, Yuan
Yan, Tongxing
Sun, Xiaoming
Yan, Fei
Yu, Dapeng
Source :
Nature Physics 19, 126 (2023)
Publication Year :
2021

Abstract

Implementing quantum algorithms on realistic hardware requires translating high-level global operations into sequences of native elementary gates, a process known as quantum compiling. Physical limitations, such as constraints in connectivity and gate alphabets, often result in unacceptable implementation costs. To enable successful near-term applications, it is crucial to optimize compilation by exploiting the potential capabilities of existing hardware. Here, we implement a resource-efficient construction for a quantum version of AND logic that can reduce the cost, enabling the execution of key quantum circuits. On a high-scalability superconducting quantum processor, we demonstrate low-depth synthesis of high-fidelity generalized Toffoli gates with up to 8 qubits and Grover's search algorithm in a search space of up to 64 entries; both are the largest such implementations in scale to date. Our experimental demonstration illustrates a scalable implementation of simplifying quantum algorithms, paving the way for larger, more meaningful quantum applications on noisy devices.

Subjects

Subjects :
Quantum Physics

Details

Database :
arXiv
Journal :
Nature Physics 19, 126 (2023)
Publication Type :
Report
Accession number :
edsarx.2112.14922
Document Type :
Working Paper
Full Text :
https://doi.org/10.1038/s41567-022-01813-7