Work

Symmetric quantum joint measurements on multiple qubits

Year: 2025

Type: article

Abstract: We investigate the generalization of symmetric quantum joint measurements on multiple qubits. We first describe a method for constructing a symmetric joint measurement basis for three qubits by utilizing single-qubit states corresponding to the four vertices of an isohedral tetrahedron on the Bloch sphere. We then demonstrate the expected tetrahedral symmetry of the current measurement basis and discuss its application in a trilocal star-shaped network. This architecture enables us to generalize the two-qubit symmetric joint measurement to an $n$-qubit version, preserving the tetrahedral or hexahedral symmetry.

Source: Physical Review A

DOI: 10.1103/physreva.111.052450

Authors: Dong Ding, Ying-Qiu He, Ting Gao, Feng-Li Yan

Institutions: North China Institute of Science and Technology, Hebei Normal University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Hebei Provincial Department of Bureau of Science and Technology

Awards: 多体量子态的纠缠结构和性质研究, G6803373549, G870711585