Zero- and Low-Field Sensing with Nitrogen Vacancy Centers

• URL: http://arxiv.org/abs/2107.10537v2
• Date: Wed, 2 Feb 2022 20:39:15 GMT
• Title: Zero- and Low-Field Sensing with Nitrogen Vacancy Centers
• Authors: Philipp J. Vetter, Alastair Marshall, Genko T. Genov, Tim F. Weiss, Nico Striegler, Eva F. Gro{\ss}mann, Santiago Oviedo Casado, Javier Cerrillo, Javier Prior, Philipp Neumann and Fedor Jelezko
• Abstract summary: nitrogen vacancy (NV) centers in diamond are easily accessible and precise magnetic field sensors. We exploit the full spin $S=1$ nature of the NV center, allowing us to detect nuclear spin signals at zero- and low-field. Our work allows for much broader and simpler applications of NV centers as magnetic field sensors in the zero- and low-field regime.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Over the years, an enormous effort has been made to establish nitrogen vacancy (NV) centers in diamond as easily accessible and precise magnetic field sensors. However, most of their sensing protocols rely on the application of bias magnetic fields, preventing their usage in zero- or low-field experiments. We overcome this limitation by exploiting the full spin $S=1$ nature of the NV center, allowing us to detect nuclear spin signals at zero- and low-field with a linearly polarized microwave field. As conventional dynamical decoupling protocols fail in this regime, we develop new robust pulse sequences and optimized pulse pairs, which allow us to sense temperature and weak AC magnetic fields and achieve an efficient decoupling from environmental noise. Our work allows for much broader and simpler applications of NV centers as magnetic field sensors in the zero- and low-field regime and can be further extended to three-level systems in ions and atoms.

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