Experimental demonstration of efficient quantum state tomography of matrix product states

被引：8
|
作者：
Zhao, Yuan-Yuan [1 ,2 ]
Hou, Zhibo [1 ,2 ]
Xiang, Guo-Yong [1 ,2 ]
Han, Yong-Jian [1 ,2 ]
Li, Chuan-Feng [1 ,2 ]
Guo, Guang-Can [1 ,2 ]
机构：
[1] Univ Sci & Technol China, CAS, Key Lab Quantum Informat, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Compendex;
D O I：
10.1364/OE.25.009010
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Quantum state tomography is a key technology for fully determining a quantum state. Unfortunately, standard quantum state tomography is intractable for general many-body quantum states, because the number of measurements and the post-processing time increase exponentially with the size of the system. However, for the matrix product states (MPSs), there exists an efficient method using linearly scaled local measurements and polynomially scaled post-processing times. In this study, we demonstrate the validity of the method in practice by reconstructing a four-photon MPS from its local two-or three-photon reduced-density matrices with the presence of statistical errors and systematical errors in experiment. (C) 2017 Optical Society of America
引用
收藏
页码：9010 / 9018
页数：9
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