Sub-nanotesla magnetometry with a fibre-coupled diamond sensor

Abstract

Sensing small magnetic fields is relevant for many applications ranging from geology to medical diagnosis. We present a fiber-coupled diamond magnetometer with a sensitivity of (310 $\pm$ 20) pT$/\sqrt{\text{Hz}}$ in the frequency range of 10-150 Hz. This is based on optically detected magnetic resonance of an ensemble of nitrogen vacancy centers in diamond at room temperature. Fiber coupling means the sensor can be conveniently brought within 2 mm of the object under study.

References in corpus (29)

• The nitrogen-vacancy colour centre in diamond
• High-sensitivity diamond magnetometer with nanoscale resolution
• Magnetometry with nitrogen-vacancy defects in diamond
• Sensitivity Optimization for NV-Diamond Magnetometry
• Temperature dependence of the nitrogen-vacancy magnetic resonance in diamond
• Optical magnetic detection of single-neuron action potentials using quantum defects in diamond
• High nitrogen-vacancy density diamonds for magnetometry applications
• Avoiding power broadening in optically detected magnetic resonance of single NV defects for enhanced DC-magnetic field sensitivity
• Photo induced ionization dynamics of the nitrogen vacancy defect in diamond investigated by single shot charge state detection
• A subpicotesla diamond magnetometer
• Magnetic field imaging with NV ensembles
• Broadband Magnetometry and Temperature Sensing with a Light Trapping Diamond Waveguide
• Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
• CMOS-Integrated Diamond Nitrogen-Vacancy Quantum Sensor
• Efficient photon detection from color centers in a diamond optical waveguide
• Realtime magnetic field sensing and imaging using a single spin in diamond
• Absolute magnetometry based on quantum beats in diamond nitrogen-vacancy centers
• Diamond magnetometer enhanced by ferrite flux concentrators
• Broadband magnetometry by infrared-absorption detection of nitrogen-vacancy ensembles in diamond
• Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond
• Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control
• Robust High-Dynamic-Range Vector Magnetometry via Nitrogen-Vacancy Centers in Diamond
• Multipulse Double-Quantum Magnetometry With Near-Surface Nitrogen Vacancy Centers
• Miniature cavity-enhanced diamond magnetometer
• Optimised frequency modulation for continuous-wave optical magnetic resonance sensing using nitrogen-vacancy ensembles
• Efficient nitrogen-vacancy centers' fluorescence excitation and collection from micrometer-sized diamond by a tapered optical fiber
• Pump-Enhanced Continuous-Wave Magnetometry using Nitrogen-Vacancy Ensembles
• Broadband loop gap resonator for nitrogen vacancy centers in diamond
• Medical applications of diamond magnetometry: commercial viability

Cited by in corpus (19)

• Review: Quantum Metrology and Sensing with Many-Body Systems
• Fiber-coupled Diamond Magnetometry with an Unshielded 30 pT/$\sqrt{\text{Hz}}$ Sensitivity
• nanoTesla magnetometry with the silicon vacancy in silicon carbide
• All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond
• Laser Direct Writing of Visible Spin Defects in Hexagonal Boron Nitride for Applications in Spin-Based Technologies
• Imaging damage in steel using a diamond magnetometer
• Tensor gradiometry with a diamond magnetometer
• Handheld device for non-contact thermometry via optically detected magnetic resonance of proximate diamond sensors
• Enhanced quantum magnetometry with a laser-written integrated photonic diamond chip
• Quantum thermodynamic derivation of the energy resolution limit in magnetometry
• On the Road with a Diamond Magnetometer
• Restoring metrological quantum advantage of measurement precision in noisy scenario
• Miniaturized magnetic-field sensor based on nitrogen-vacancy centers
• Enhancing precision of atomic clocks by tuning disorder in accessories
• Sensitivity-enhanced magnetometry using nitrogen-vacancy ensembles via adaptively complete transitions overlapping
• A Fully-integrated Diamond Nitrogen-Vacancy Magnetometer with Nanotesla Sensitivity
• Diamond-on-chip infrared absorption magnetic field camera
• Exploring the Spin Dynamics of a Room-Temperature Diamond Maser using an Extended rate Equation Model
• Gaussian quantum metrology in a dissipative environment