Accurate measurement of an intended conditional phase does not by itself place a multiqubit phase gate in its declared generalized-gate equivalence class. We cast the diagnosis as structured Hamiltonian learning of the diagonal successful block in a known basis: Ramsey measurements on a connected graph reconstruct a ta...
Implementing high-fidelity multiqubit gates is critical for reducing circuit depth in near-term quantum processors and fault-tolerant architectures. However, realizing multiqubit interactions and entanglement remains a critical challenge that limits the implementation of multiqubit gates. Here we propose an all-microwa...
Guan-Qi Wang, Yao Song, Peng-Bo Li et al.· 0 citations
These results establish a Grover-based realization of path-integral slow thinking: the interior target preserves exploratory path diversity, and ensemble-level interference converts it into verified performance.
Xian-Sheng Cai, Xiu-Hao Deng, Kun Chen· 0 citations
This work proposes a framework for dynamical quantum error correction at the circuit level, requiring no logical encoding or ancillary qubits, and shows that this circuit-level dynamical correction synergizes with pulse-level robust control, providing an analytical bridge between continuous noise dynamics and discrete...
Jun-Kai Zeng, Hao Liang, Ju-Hai Yong et al.· Quantum Science and Technolo...· 0 citations
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