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For each sensing platform, pinpointing the optimal controls to enhance the sensor&amp;apos;s precision remains a challenging task. While an analytical solution might be out of reach, machine learning offers a promising avenue for many systems of interest, especially given the capabilities of contemporary hardware. We have introduced a versatile procedure capable of optimizing a wide range of problems in quantum metrology, estimation, and hypothesis testing by combining model-aware reinforcement learning (RL) with Bayesian estimation based on particle filtering. To achieve this, we had to address the challenge of incorporating the many non-differentiable steps of the estimation in the training process, such as measurements and the resampling of the particle filter. Model-aware RL is a gradient-based method, where the derivatives of the sensor&amp;apos;s precision are obtained through automatic differentiation (AD) in the simulation of the experiment. Our approach is suitable for optimizing both non-adaptive and adaptive strategies, using neural networks or other agents. We provide an implementation of this technique in the form of a Python library called qsensoropt, alongside several pre-made applications for relevant physical platforms, namely NV centers, photonic circuits, and optical cavities. This library will be released soon on PyPI. Leveraging our method, we&amp;apos;ve achieved results for many examples that surpass the current state-of-the-art in experimental design. In addition to Bayesian estimation, leveraging model-aware RL, it is also possible to find optimal controls for the minimization of the Cram\u00e9r-Rao bound, based on Fisher information.<\/jats:p>","DOI":"10.22331\/q-2024-12-10-1555","type":"journal-article","created":{"date-parts":[[2024,12,10]],"date-time":"2024-12-10T16:16:38Z","timestamp":1733847398000},"page":"1555","update-policy":"https:\/\/doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":4,"title":["Model-aware reinforcement learning for high-performance Bayesian experimental design in quantum metrology"],"prefix":"10.22331","volume":"8","author":[{"given":"Federico","family":"Belliardo","sequence":"first","affiliation":[{"name":"NEST, Scuola Normale Superiore, I-56126 Pisa, Italy"}]},{"given":"Fabio","family":"Zoratti","sequence":"additional","affiliation":[{"name":"Scuola Normale Superiore, I-56126 Pisa, Italy"}]},{"given":"Florian","family":"Marquardt","sequence":"additional","affiliation":[{"name":"Max Planck Institute for the Science of Light and Physics Department, University of Erlangen-Nuremberg, 91058 Erlangen, Germany"}]},{"given":"Vittorio","family":"Giovannetti","sequence":"additional","affiliation":[{"name":"NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, I-56126 Pisa, Italy"}]}],"member":"9598","published-online":{"date-parts":[[2024,12,10]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"Fulvio Flamini, Arne Hamann, Sofi\u00e8ne Jerbi, Lea M Trenkwalder, Hendrik Poulsen Nautrup, and Hans J Briegel. ``Photonic architecture for reinforcement learning&apos;&apos;. 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