发表刊物：JUSTC

摘要：Quantum state tomography provides a key tool for validating and fully exploiting quantum resources. However, current protocols of pure-state informationally-complete (PS-IC) measurement settings generally involve various multi-qubit gates or complex quantum algorithms, which are not practical for large systems. In this study, we present an adaptive approach to N -qubit pure-state tomography with Pauli measurements. First, projective measurements on each qubit in the Z-direction were implemented to determine the amplitude of each base of the target state. Then, a set of Pauli measurement settings was recursively deduced by the Z-measurement results, which can be used to determine the phase of each base. The number of required measurement settings is O(N) for certain quantum states, including cluster and W states. Finally, we numerically verified the feasibility of our strategy by reconstructing a 1-D chain state using a neural network algorithm.

合写作者：Xiangrui Meng et al.

论文类型：期刊论文

学科门类：理学

文献类型：J

卷号：52

期号：8

页面范围：1-1

是否译文：否

发表时间：2022-09-06

收录刊物：SCI

发布期刊链接：https://justc.ustc.edu.cn/en/article/doi/10.52396/JUSTC-2022-0037