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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.04955 |
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| _version_ | 1866910781803593728 |
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| author | Yu, Yefei Liu, Ran Xue, Guangming Yang, Chuhong Wang, Chenlu Zhang, Jingning Cui, Jiangyu Yang, Xiaodong Li, Jun Han, Jiaxiu Yu, Haifeng |
| author_facet | Yu, Yefei Liu, Ran Xue, Guangming Yang, Chuhong Wang, Chenlu Zhang, Jingning Cui, Jiangyu Yang, Xiaodong Li, Jun Han, Jiaxiu Yu, Haifeng |
| contents | Quantum critical systems offer promising advancements in quantum sensing and metrology, yet face limitations like critical slowing down and a restricted criticality-enhanced region. Here, we introduce a critical sensing scheme that mitigate critical slowing down by leveraging the non-equilibrium dynamics of a perturbed Ising spin model, coupled with an adaptive strategy to enlarge its sensing interval. We validate the proposed scheme on a superconducting quantum processor and demonstrate that our scheme achieves a Heisenberg scaling with respect to the encoding duration. Additionally, the adaptive strategy tunes the model to operate near its critical point with limited prior information about the parameter, enabling what is known as global sensing. Our work showcases the metrological applications empowered by non-equilibrium critical dynamics and hence opens up a pathway for devising critical quantum sensors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_04955 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Experimental Realization of Criticality-Enhanced Global Quantum Sensing via Non-Equilibrium Dynamics Yu, Yefei Liu, Ran Xue, Guangming Yang, Chuhong Wang, Chenlu Zhang, Jingning Cui, Jiangyu Yang, Xiaodong Li, Jun Han, Jiaxiu Yu, Haifeng Quantum Physics Quantum critical systems offer promising advancements in quantum sensing and metrology, yet face limitations like critical slowing down and a restricted criticality-enhanced region. Here, we introduce a critical sensing scheme that mitigate critical slowing down by leveraging the non-equilibrium dynamics of a perturbed Ising spin model, coupled with an adaptive strategy to enlarge its sensing interval. We validate the proposed scheme on a superconducting quantum processor and demonstrate that our scheme achieves a Heisenberg scaling with respect to the encoding duration. Additionally, the adaptive strategy tunes the model to operate near its critical point with limited prior information about the parameter, enabling what is known as global sensing. Our work showcases the metrological applications empowered by non-equilibrium critical dynamics and hence opens up a pathway for devising critical quantum sensors. |
| title | Experimental Realization of Criticality-Enhanced Global Quantum Sensing via Non-Equilibrium Dynamics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2501.04955 |