Paper Publications

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Journal:JUSTC

Abstract: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.

Co-author:Xiangrui Meng et al.

Indexed by:Journal paper

Discipline:Natural Science

Document Type:J

Volume:52

Issue:8

Page Number:1-1

Translation or Not:no

Date of Publication:2022-09-06

Included Journals:SCI

Links to published journals:https://justc.ustc.edu.cn/en/article/doi/10.52396/JUSTC-2022-0037