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Experimental multiparameter quantum metrology in adaptive regime
- Source :
- Physical Review Research, Vol 5, Iss 1, p 013138 (2023)
- Publication Year :
- 2023
- Publisher :
- American Physical Society, 2023.
-
Abstract
- Relevant metrological scenarios involve the simultaneous estimation of multiple parameters. The fundamental ingredient to achieve quantum-enhanced performance is based on the use of appropriately tailored quantum probes. However, reaching the ultimate resolution allowed by physical laws requires nontrivial estimation strategies from both a theoretical and a practical point of view. A crucial tool for this purpose is the application of adaptive learning techniques. Indeed, adaptive strategies provide a flexible approach to obtain optimal parameter-independent performance and optimize convergence to the fundamental bounds with a limited amount of resources. Here, we combine on the same platform quantum-enhanced multiparameter estimation attaining the corresponding quantum limit and adaptive techniques. We demonstrate the simultaneous estimation of three optical phases in a programmable integrated photonic circuit, in the limited-resource regime. The obtained results show the possibility of successfully combining different fundamental methodologies towards transition to quantum sensors applications.
Details
- Language :
- English
- ISSN :
- 26431564
- Volume :
- 5
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Physical Review Research
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1ba87fe55d8f46e58d29bd3ae74984b5
- Document Type :
- article
- Full Text :
- https://doi.org/10.1103/PhysRevResearch.5.013138