Quantum magnetometer based on cross-relaxation resonances in ensembles of NV-centers in diamond
Akhmedzhanov R. A.1, Gushchin L. A. 1, Zelensky I. V.1, Kupaev A.V. 1, Nizov V. A.1, Nizov N. A.1, Sobgayda D. A.1
1Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
Email: zelensky@appl.sci-nnov.ru

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We create a working model of a magnetometer of a new type that is based on using cross-relaxation resonances in ensembles of NV-centers in diamond. This type of magnetometer does not require microwave radiation. For a sensor made out of a 300 micron diamond we demonstrate the magnetic field sensitivity of around 18 nT/Hz1/2. Keywords: cross-relaxation, NV-center, quantum magnetometer.
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