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Conferences > CLEO_Europe > 2019 > ch_8 > ch_8_1
  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper ch_8_1

Room temperature magnetic field learning with optically readout single NV-centers

Antonio A. Gentile, Raffaele Santagati, Sebastian Knauer, Simon Schmitt, Stefano Paesani, Chris Granade, Nathan Wiebe, Christian Osterkamp, Liam P. McGuinness, Jianwei Wang, Mark G. Thompson, John G. Rarity, Fedor Jelezko, and Anthony Laing

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Abstract

We propose and test a Magnetic Field Learning (MFL) protocol for high-resolution, high dynamic range and high-sensitivity magnetometry with a single NV-center electron spin. Our approach leverages recent proposals that analyze the benefits of adopting classical machine learning to post-process quantum data in quantum sensing protocols [1]. MFL was tested at room–temperature using a setup detecting state–dependent fluorescence via confocal microscopy, and a microwave controlled NV defect in bulk diamond as a sensor [2]. This setup senses the intensity of a magnetic field B in the proximity of the quantum sensor via Ramsey interferometry [3]. In our protocol, the Ramsey precession time τi is adaptively chosen at each step via an efficient particle guess heuristic [1].

© 2019 IEEE

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