Symmetric Quantum Joint Measurements On Multiple Qubits | Awesome Quantum Computing Papers

Symmetric Quantum Joint Measurements On Multiple Qubits

Dong Ding, Ying-Qiu He, Ting Gao, Feng-Li Yan Β· Physical Review A Β· 2025

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 a tetrahedron on the Bloch sphere. We 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.

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