Miniature cavity-enhanced diamond magnetometer

Abstract

We present a highly sensitive miniaturized cavity-enhanced room-temperature magnetic-field sensor based on nitrogen-vacancy (NV) centers in diamond. The magnetic resonance signal is detected by probing absorption on the 1042\,nm spin-singlet transition. To improve the absorptive signal the diamond is placed in an optical resonator. The device has a magnetic-field sensitivity of 28 pT/$\sqrt{\mathrm{Hz}}$, a projected photon shot-noise-limited sensitivity of 22 pT/$\sqrt{\mathrm{Hz}}$ and an estimated quantum projection-noise-limited sensitivity of 0.43 pT/$\sqrt{\mathrm{Hz}}$ with the sensing volume of $\sim$ 390 $\mu$m $\times$ 4500 $\mu$m${}^2$. The presented miniaturized device is the basis for an endoscopic magnetic field sensor for biomedical applications.

References in corpus (11)

• Nanometer scale quantum thermometry in a living cell
• Optical magnetic detection of single-neuron action potentials using quantum defects in diamond
• A subpicotesla diamond magnetometer
• Strongly enhanced photon collection from diamond defect centres under micro-fabricated integrated solid immersion lenses
• Optical properties of the nitrogen-vacancy singlet levels in diamond
• Efficient photon detection from color centers in a diamond optical waveguide
• 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
• Integrated Diamond Optics for Single Photon Detection
• Optimizing a Dynamical Decoupling Protocol for Solid-State Electronic Spin Ensembles in Diamond
• Magnetometry with nitrogen-vacancy ensembles in diamond based on infrared absorption in a doubly resonant optical cavity

Cited by in corpus (38)

• Sensitivity Optimization for NV-Diamond Magnetometry
• Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
• Decoherence of dipolar spin ensembles in diamond
• CMOS-Integrated Diamond Nitrogen-Vacancy Quantum Sensor
• Diamond magnetometer enhanced by ferrite flux concentrators
• Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control
• Precision Magnetometers for Aerospace Applications
• Diamond Integrated Quantum Photonics: A Review
• Detection of biological signals from a live mammalian muscle using a diamond quantum sensor
• Cavity quantum electrodynamic readout of a solid-state spin sensor
• Sub-nanotesla magnetometry with a fibre-coupled diamond sensor
• Microwave-free vector magnetometry with nitrogen-vacancy centers along a single axis in diamond
• Widefield imaging of superconductor vortices with electron spins in diamond
• Multiplexed sensing of magnetic field and temperature in real time using a nitrogen vacancy spin ensemble in diamond
• Fiber-coupled Diamond Magnetometry with an Unshielded 30 pT/$\sqrt{\text{Hz}}$ Sensitivity
• Photoluminescence decomposition analysis: a technique to characterize NV creation in diamond
• Novel color center platforms enabling fundamental scientific discovery
• Optimisation of a diamond nitrogen vacancy centre magnetometer for sensing of biological signals
• Eddy-current imaging with nitrogen-vacancy centers in diamond
• Broadband loop gap resonator for nitrogen vacancy centers in diamond
• Infrared laser magnetometry with a NV doped diamond intracavity etalon
• Probing topological spin structures using light-polarization and magnetic microscopy
• Nitrogen-Vacancy Ensemble Magnetometry Based on Pump Absorption
• Photonic nanobeam cavities with nano-pockets for efficient integration of fluorescent nanoparticles
• Controllable optical response and tunable sensing based on self interference in waveguide QED systems
• Ferrimagnetic Oscillator Magnetometer
• Biocompatible technique for nanoscale magnetic field sensing with Nitrogen-Vacancy centers
• Cavity-enhanced magnetometer with a spinor Bose-Einstein condensate
• Cavity-enhanced detection of spin polarization in a microfabricated atomic vapor cell
• Hamiltonian engineering of general two-body spin-1/2 interactions
• Characterizing spin-bath parameters using conventional and time-asymmetric Hahn-echo sequences
• Infrared Vertical External Cavity Surface Emitting Laser Threshold Magnetometer
• Diamond-optic enhanced photon collection efficiency for sensing with nitrogen-vacancy centers
• A Fully-integrated Diamond Nitrogen-Vacancy Magnetometer with Nanotesla Sensitivity
• Magnetic field orientation dependence of continuous-wave optically detected magnetic resonance with nitrogen-vacancy ensembles
• High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles
• Diamond-on-chip infrared absorption magnetic field camera
• Optimality of Gaussian receivers for practical Gaussian distributed sensing