Entangled states from sparsely coupled spins for metrology with neutral atoms
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913906062000128 |
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| author | Kuriyattil, Sridevi Poggi, Pablo M. Pritchard, Jonathan D. Kombe, Johannes Daley, Andrew J. |
| author_facet | Kuriyattil, Sridevi Poggi, Pablo M. Pritchard, Jonathan D. Kombe, Johannes Daley, Andrew J. |
| contents | Quantum states featuring extensive multipartite entanglement are a resource for quantum-enhanced metrology, with sensitivity up to the Heisenberg limit. However, robust generation of these states using unitary dynamics typically requires all-to-all interactions among particles. Here, we demonstrate that optimal states for quantum sensing can be generated with sparse interaction graphs featuring only a logarithmic number of couplings per particle. We show that specific sparse graphs with long-range interactions can approximate the dynamics of all-to-all spin models, such as the one-axis twisting model, even for large system sizes. The resulting sparse coupling graphs and protocol can also be efficiently implemented using dynamic reconfiguration of atoms in optical tweezers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_10010 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Entangled states from sparsely coupled spins for metrology with neutral atoms Kuriyattil, Sridevi Poggi, Pablo M. Pritchard, Jonathan D. Kombe, Johannes Daley, Andrew J. Quantum Physics Quantum Gases Quantum states featuring extensive multipartite entanglement are a resource for quantum-enhanced metrology, with sensitivity up to the Heisenberg limit. However, robust generation of these states using unitary dynamics typically requires all-to-all interactions among particles. Here, we demonstrate that optimal states for quantum sensing can be generated with sparse interaction graphs featuring only a logarithmic number of couplings per particle. We show that specific sparse graphs with long-range interactions can approximate the dynamics of all-to-all spin models, such as the one-axis twisting model, even for large system sizes. The resulting sparse coupling graphs and protocol can also be efficiently implemented using dynamic reconfiguration of atoms in optical tweezers. |
| title | Entangled states from sparsely coupled spins for metrology with neutral atoms |
| topic | Quantum Physics Quantum Gases |
| url | https://arxiv.org/abs/2412.10010 |