Quantum gate identification: Error analysis, numerical results and optical experiment

doi:10.1016/j.automatica.2018.12.011

CSpace > 系统科学研究所

	Quantum gate identification: Error analysis, numerical results and optical experiment
	Wang, Yuanlong 1,2; Yin, Qi 3,4; Dong, Daoyi 1; Qi, Bo5,6 ; Petersen, Ian R.7; Hou, Zhibo 3,4; Yonezawa, Hidehiro 1,2; Xiang, Guo-Yong 3,4
	2019-03-01
发表期刊	AUTOMATICA
ISSN	0005-1098
卷号	101 页码:269-279
摘要	The identification of an unknown quantum gate is a significant issue in quantum technology. In this paper, we propose a quantum gate identification method within the framework of quantum process tomography. In this method, a series of pure states are applied to the gate and then a fast state tomography on the output states is performed and the data are used to reconstruct the quantum gate. The algorithm has computational complexity O(d(3)) with the system dimension d. The identification approach is compared with the maximum likelihood estimation method for the running time, which shows an efficiency advantage of our method. An error upper bound is established for the identification algorithm and the robustness of the algorithm against impurities in the input states is also tested. We perform a quantum optical experiment on a single-qubit Hadamard gate to verify the effectiveness of the identification algorithm. (C) 2018 Elsevier Ltd. All rights reserved.
关键词	Quantum system Quantum tomography Quantum gate identification Computational complexity
DOI	10.1016/j.automatica.2018.12.011
语种	英语
资助项目	Australian Research Council[DP190101566] ; Australian Research Council[FL110100020] ; AFOSR[FA2386-16-1-4065] ; Centres of Excellence[CE110001027] ; National Natural Science Foundation of China[61773370] ; National Natural Science Foundation of China[61828303] ; National Natural Science Foundation of China[61833010] ; National Natural Science Foundation of China[11574291] ; National Natural Science Foundation of China[11774334] ; National Natural Science Foundation of China[11688101]
WOS研究方向	Automation & Control Systems ; Engineering
WOS类目	Automation & Control Systems ; Engineering, Electrical & Electronic
WOS记录号	WOS:000458941700031
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/32697
专题	系统科学研究所
通讯作者	Dong, Daoyi
作者单位	1.Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia 2.Australian Res Council, Ctr Quantum Computat & Commun Technol, Canberra, ACT 2600, Australia 3.Univ Sci & Technol China, CAS, Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China 4.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China 5.Acad Math & Syst Sci, CAS, Key Lab Syst & Control, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Australian Natl Univ, Res Sch Engn, Canberra, ACT 0200, Australia
推荐引用方式 GB/T 7714	Wang, Yuanlong,Yin, Qi,Dong, Daoyi,et al. Quantum gate identification: Error analysis, numerical results and optical experiment[J]. AUTOMATICA,2019,101:269-279.
APA	Wang, Yuanlong.,Yin, Qi.,Dong, Daoyi.,Qi, Bo.,Petersen, Ian R..,...&Xiang, Guo-Yong.(2019).Quantum gate identification: Error analysis, numerical results and optical experiment.AUTOMATICA,101,269-279.
MLA	Wang, Yuanlong,et al."Quantum gate identification: Error analysis, numerical results and optical experiment".AUTOMATICA 101(2019):269-279.