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quant-ph2026
Gate Parameter Lee-Yang Zeros and Dynamical Phases in Quantum Circuits
Yunfeng Jiang, Chang Liu, Yu Wu +1
We propose gate-parameter Lee-Yang zeros of Loschmidt amplitudes as probes of dynamical phases in finite quantum circuits. We study Floquet circuits constructed from two-qubit fSim…
quant-ph2024
Exact Spin Correlators of Integrable Quantum Circuits from Algebraic Geometry
Arthur Hutsalyuk, Yunfeng Jiang, Balazs Pozsgay +2
We calculate the correlation functions of strings of spin operators for integrable quantum circuits exactly. These observables can be used for calibration of quantum simulation pla…