Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation
We propose a state preparation protocol based on sequential measurements of a central spin coupled with a spin ensemble, and investigate the usefulness of the generated multi-spin states for quantum enhanced metrology. Our protocol is shown to generate highly entangled spin states, devoid of the nec...
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| Format: | Article |
| Language: | English |
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Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2025-01-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2025-01-14-1590/pdf/ |
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| author | T. B. Lantaño Dayou Yang K. M. R. Audenaert S. F. Huelga M. B. Plenio |
| author_facet | T. B. Lantaño Dayou Yang K. M. R. Audenaert S. F. Huelga M. B. Plenio |
| author_sort | T. B. Lantaño |
| collection | DOAJ |
| description | We propose a state preparation protocol based on sequential measurements of a central spin coupled with a spin ensemble, and investigate the usefulness of the generated multi-spin states for quantum enhanced metrology. Our protocol is shown to generate highly entangled spin states, devoid of the necessity for non-linear spin interactions. The metrological sensitivity of the resulting state surpasses the standard quantum limit, reaching the Heisenberg limit under symmetric coupling strength conditions. We also explore asymmetric coupling strengths, identifying specific preparation windows in time for optimal sensitivity. Our findings introduce a novel method for generating large-scale, non-classical, entangled states, enabling quantum-enhanced metrology within current experimental capabilities. |
| format | Article |
| id | doaj-art-9e004290d9dd4b94adfa0c4071a39040 |
| institution | Kabale University |
| issn | 2521-327X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
| record_format | Article |
| series | Quantum |
| spelling | doaj-art-9e004290d9dd4b94adfa0c4071a390402025-01-14T15:08:16ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2025-01-019159010.22331/q-2025-01-14-159010.22331/q-2025-01-14-1590Unlocking Heisenberg Sensitivity with Sequential Weak Measurement PreparationT. B. LantañoDayou YangK. M. R. AudenaertS. F. HuelgaM. B. PlenioWe propose a state preparation protocol based on sequential measurements of a central spin coupled with a spin ensemble, and investigate the usefulness of the generated multi-spin states for quantum enhanced metrology. Our protocol is shown to generate highly entangled spin states, devoid of the necessity for non-linear spin interactions. The metrological sensitivity of the resulting state surpasses the standard quantum limit, reaching the Heisenberg limit under symmetric coupling strength conditions. We also explore asymmetric coupling strengths, identifying specific preparation windows in time for optimal sensitivity. Our findings introduce a novel method for generating large-scale, non-classical, entangled states, enabling quantum-enhanced metrology within current experimental capabilities.https://quantum-journal.org/papers/q-2025-01-14-1590/pdf/ |
| spellingShingle | T. B. Lantaño Dayou Yang K. M. R. Audenaert S. F. Huelga M. B. Plenio Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation Quantum |
| title | Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation |
| title_full | Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation |
| title_fullStr | Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation |
| title_full_unstemmed | Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation |
| title_short | Unlocking Heisenberg Sensitivity with Sequential Weak Measurement Preparation |
| title_sort | unlocking heisenberg sensitivity with sequential weak measurement preparation |
| url | https://quantum-journal.org/papers/q-2025-01-14-1590/pdf/ |
| work_keys_str_mv | AT tblantano unlockingheisenbergsensitivitywithsequentialweakmeasurementpreparation AT dayouyang unlockingheisenbergsensitivitywithsequentialweakmeasurementpreparation AT kmraudenaert unlockingheisenbergsensitivitywithsequentialweakmeasurementpreparation AT sfhuelga unlockingheisenbergsensitivitywithsequentialweakmeasurementpreparation AT mbplenio unlockingheisenbergsensitivitywithsequentialweakmeasurementpreparation |