Quantum metrology in the presence of correlated noise via Markovian embedding
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914325248081920 |
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| author | Das, Arpan Demkowicz-Dobrzański, Rafał |
| author_facet | Das, Arpan Demkowicz-Dobrzański, Rafał |
| contents | We analyze quantum metrological protocols, where the sensing system is linearly coupled to a bosonic environment, by performing a Markovian embedding of the problem based on pseudomode formalism. This allows us to effectively model the problem using low-dimensional environment and apply recently developed powerful tools that yield optimal metrological protocols and fundamental metrological bounds for correlated-noise models. We illustrate the method by investigating a frequency estimation protocol in the presence of noise modeled effectively as a damped Jaynes-Cummings dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_19685 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum metrology in the presence of correlated noise via Markovian embedding Das, Arpan Demkowicz-Dobrzański, Rafał Quantum Physics We analyze quantum metrological protocols, where the sensing system is linearly coupled to a bosonic environment, by performing a Markovian embedding of the problem based on pseudomode formalism. This allows us to effectively model the problem using low-dimensional environment and apply recently developed powerful tools that yield optimal metrological protocols and fundamental metrological bounds for correlated-noise models. We illustrate the method by investigating a frequency estimation protocol in the presence of noise modeled effectively as a damped Jaynes-Cummings dynamics. |
| title | Quantum metrology in the presence of correlated noise via Markovian embedding |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2509.19685 |