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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2512.12695 |
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| _version_ | 1866913133160824832 |
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| author | Wu, Xiaofeng Wang, Xin Jia, Sixun Xiong, Bo |
| author_facet | Wu, Xiaofeng Wang, Xin Jia, Sixun Xiong, Bo |
| contents | The experimental detection of non-equilibrium quantum criticality remains a challenge, as traditional signatures like dynamical quantum phase transitions rely on hard-to-measure global properties. Here, we demonstrate that local connected correlation functions provide a superior, practical means to directly probe the dynamics of magnetic order in a quenched Rydberg atom array. Using a Magnus expansion formalism, we derive analytic expressions for these correlations that capture a smooth crossover from antiferromagnetic to ferromagnetic dominance. Our analytic results, which reveal the critical parameter relationship $U_{c}(δ)$, are validated against exact numerical simulations and exhibit robustness to finite-size effects. By shifting the focus from global singularities to local correlations, our protocol establishes a direct and feasible path to observe the rich critical dynamics in scalable quantum simulators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_12695 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the Crossover between Dynamical Phases with Local Correlations in a Rydberg Atom Array Wu, Xiaofeng Wang, Xin Jia, Sixun Xiong, Bo Quantum Gases Quantum Physics The experimental detection of non-equilibrium quantum criticality remains a challenge, as traditional signatures like dynamical quantum phase transitions rely on hard-to-measure global properties. Here, we demonstrate that local connected correlation functions provide a superior, practical means to directly probe the dynamics of magnetic order in a quenched Rydberg atom array. Using a Magnus expansion formalism, we derive analytic expressions for these correlations that capture a smooth crossover from antiferromagnetic to ferromagnetic dominance. Our analytic results, which reveal the critical parameter relationship $U_{c}(δ)$, are validated against exact numerical simulations and exhibit robustness to finite-size effects. By shifting the focus from global singularities to local correlations, our protocol establishes a direct and feasible path to observe the rich critical dynamics in scalable quantum simulators. |
| title | Probing the Crossover between Dynamical Phases with Local Correlations in a Rydberg Atom Array |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2512.12695 |