Quantitative study of the response of a single NV defect in diamond to magnetic noise

Abstract

The nitrogen-vacancy (NV) defect in diamond is an efficient quantum sensor of randomly fluctuating signals via relaxometry measurements. In particular, the longitudinal spin relaxation of the NV defect accelerates in the presence of magnetic noise with a spectral component at its electron spin resonance frequency. We look into this effect quantitatively by applying a calibrated and tunable magnetic noise on a single NV defect. We show that an increase of the longitudinal spin relaxation rate translates into a reduction of the photoluminescence (PL) signal emitted under continuous optical illumination, which can be explained using a simplified three-level model of the NV defect. This PL quenching mechanism offers a simple, all-optical method to detect magnetic noise sources at the nanoscale.

5 pages, 3 figures

References in corpus (6)

• Spin dynamics in the optical cycle of single nitrogen-vacancy centres in diamond
• Nanoscale Dynamic Readout of a Chemical Redox Process Using Radicals Coupled with Nitrogen-Vacancy Centers in Nanodiamonds
• Imaging non-collinear antiferromagnetic textures via single spin relaxometry
• Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor
• Two-dimensional nanoscale imaging of gadolinium spins via scanning probe relaxometry with a single spin in diamond
• Current-induced nucleation and dynamics of skyrmions in a Co-based Heusler alloy

Cited by in corpus (7)

• Diamond surface engineering for molecular sensing with nitrogen-vacancy centers
• Impact of Charge Conversion on NV-Center Relaxometry
• Antiferromagnetic insulatronics: spintronics in insulating 3d metal oxides with antiferromagnetic coupling
• Filtering and imaging of frequency-degenerate spin waves using nanopositioning of a single-spin sensor
• Optically detected magnetic resonance with an open source platform
• Room temperature relaxometry of single nitrogen-vacancy centers in proximity to $\alpha$-RuCl${}_3$ nanoflakes
• Nanoscale magnetometry of a synthetic three-dimensional spin texture