A Universal Protocol for Quantum-Enhanced Sensing via Information Scrambling
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866912127108775936 |
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| author | Kobrin, Bryce Schuster, Thomas Block, Maxwell Wu, Weijie Mitchell, Bradley Davis, Emily Yao, Norman Y. |
| author_facet | Kobrin, Bryce Schuster, Thomas Block, Maxwell Wu, Weijie Mitchell, Bradley Davis, Emily Yao, Norman Y. |
| contents | We introduce a novel protocol, which enables Heisenberg-limited quantum-enhanced sensing using the dynamics of any interacting many-body Hamiltonian. Our approach - dubbed butterfly metrology - utilizes a single application of forward and reverse time evolution to produce a coherent superposition of a "scrambled" and "unscrambled" quantum state. In this way, we create metrologically-useful long-range entanglement from generic local quantum interactions. The sensitivity of butterfly metrology is given by a sum of local out-of-time-order correlators (OTOCs) - the prototypical diagnostic of quantum information scrambling. Our approach broadens the landscape of platforms capable of performing quantum-enhanced metrology; as an example, we provide detailed blueprints and numerical studies demonstrating a route to scalable quantum-enhanced sensing in ensembles of solid-state spin defects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_12794 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Universal Protocol for Quantum-Enhanced Sensing via Information Scrambling Kobrin, Bryce Schuster, Thomas Block, Maxwell Wu, Weijie Mitchell, Bradley Davis, Emily Yao, Norman Y. Quantum Physics Quantum Gases Statistical Mechanics Atomic Physics We introduce a novel protocol, which enables Heisenberg-limited quantum-enhanced sensing using the dynamics of any interacting many-body Hamiltonian. Our approach - dubbed butterfly metrology - utilizes a single application of forward and reverse time evolution to produce a coherent superposition of a "scrambled" and "unscrambled" quantum state. In this way, we create metrologically-useful long-range entanglement from generic local quantum interactions. The sensitivity of butterfly metrology is given by a sum of local out-of-time-order correlators (OTOCs) - the prototypical diagnostic of quantum information scrambling. Our approach broadens the landscape of platforms capable of performing quantum-enhanced metrology; as an example, we provide detailed blueprints and numerical studies demonstrating a route to scalable quantum-enhanced sensing in ensembles of solid-state spin defects. |
| title | A Universal Protocol for Quantum-Enhanced Sensing via Information Scrambling |
| topic | Quantum Physics Quantum Gases Statistical Mechanics Atomic Physics |
| url | https://arxiv.org/abs/2411.12794 |