QECANM · Quantum Estimation and Control for Advanced Noisy Metrology
Horizon Europe — Marie Skłodowska-Curie Actions
- Duration
- 2023-09-01 → 2025-08-31
- EU contribution
- €172,750
- Participants
- 1
- Scheme
- HORIZON-TMA-MSCA-PF-EF
Lines connect the coordinator with its partners.
Results in brief
Quantum Estimation and Control for Advanced Noisy Metrology
Quantum sensors are already used to make extraordinarily precise measurements, from imaging and microscopy to tests of fundamental physics. The QECANM project set out to understand how far such sensors can be pushed under realistic conditions, where several quantities may need to be estimated at once and where environmental noise cannot be ignored. The project focused on three connected pillars: (i) understanding and exploring the limits of multi-parameter quantum estimation, including the peculiar quantum phenomenon of measurement incompatibility; (ii) deriving fundamental precision limits when probes are affected by correlated (non-independent) noise; and (iii) developing benchmarks for schemes based on time-continuous measurements that enable real-time feedback and control, especially under realistic conditions with imperfect detection. The overarching objective was to develop theoretical and computational tools that provide reliable benchmarks for next-generation quantum sensors.
Data: CORDIS, © European Union
Project objective
In recent years, the idea of building quantum technologies has quickly moved from being an intellectual curiosity to a practical reality and quantum metrology and quantum sensors are prominent ones, already in use in scientific and commercial applications. The underlying idea is to exploit genuinely quantum effects to perform extremely accurate measurements, with a precision not achievable by classical means.While many important theoretical and experimental milestones have already been reached, there are still many open theoretical questions left on the path to understanding the ultimate capabilities of quantum metrology, especially in realistic operating conditions.We have identified three main pillars that are currently subject to very active research: i) understanding the ultimate limits of the quantum estimation of multiple parameters simultaneously, either because all of them are of practical interest, or because a full prior characterization of additional system's parameters is not possible; ii) assessing the impact of environmental noise on the quantum probe, in particular beyond the standard assumption of uncorrelated noise; iii) understanding the limits of metrological schemes based on time-continuous measurements, nowadays feasible in many physical systems (e.g. superconducting qubits, optomechanics), which open the possibility to perform measurement-based feedback control on the system.The overarching goal of this action is to advance the state of the art in these three areas and to connect these three pillars, by devising new theoretical tools to assess the ultimate precision limits in novel and physically relevant scenarios. These tools will be rooted in quantum estimation theory and quantum control theory and they will provide fundamental benchmarks for the next generation of quantum sensors.
Original text from CORDIS.
Participants
- SCUOLA NORMALE SUPERIORE · PisaCoordinatorItaly
Links
- View on CORDIS
- DOI: 10.3030/101068347
- https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e50952051c&appId=PPGMS
- https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e521b054b5&appId=PPGMS
Data: CORDIS, © European Union