Author

Xingyuan Bu

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Preprint Sep 2026

Robust Device-Independent Certification of Boolean-Phase Gates

Device-independent certification of a quantum gate requires the input and output tests to identify the same reference qubits. Self-testing the output Choi state alone does not guarantee this consistency. We develop a robust certification scheme for Boolean-phase gates, a broad family of computational-basis diagonal gat...

Yun-Guang Han, Xing-Yuan Bu, Aleksandra Gočanin et al. · 0 citations

Preprint Jul 2026

Device-Independent Self-Testing of the Three-Qubit CCZ Hypergraph State

The three-qubit CCZ state is the smallest rank-three hypergraph state and an elementary entangled magic resource. Its cubic phase is governed by generalized stabilizers that are not Pauli strings, so standard graph-state self-testing arguments do not apply directly. We show that twenty correlators, all obtainable from...

Yunguang Han, Xin Kuang, Xingyuan Bu et al. · 0 citations