Quantum Quenches from the Critical Point: Theory and Experimental Validation in a Trapped-Ion Quantum Simulator

Adolfo del Campo; Andr\'as Grabarits; Chen-Xu Wang; Chuan-Feng Li; Hua-Bi Zeng; Jin-Ming Cui; Yun-Feng Huang

Quantum Quenches from the Critical Point: Theory and Experimental Validation in a Trapped-Ion Quantum Simulator

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arxiv 2507.01087 v1 pith:P7Q5TUUC submitted 2025-07-01 quant-ph

Quantum Quenches from the Critical Point: Theory and Experimental Validation in a Trapped-Ion Quantum Simulator

Chen-Xu Wang , Andr\'as Grabarits , Jin-Ming Cui , Hua-Bi Zeng , Yun-Feng Huang , Chuan-Feng Li , Adolfo del Campo This is my paper

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We investigate quantum quenches starting from a critical point and experimentally probe the associated defect statistics using a trapped-ion quantum simulator of the transverse-field Ising model. The cumulants of the defect number distribution exhibit universal scaling with quench depth, featuring Gaussian behavior at leading order and systematic subleading corrections. Our results are in excellent agreement with both exact and approximate theoretical predictions, establishing quench-depth scaling as a powerful and precise experimental benchmark for nonequilibrium quantum critical dynamics.

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