Ferrimagnetic Oscillator Magnetometer
arXiv:2305.19938 · doi:10.1103/PhysRevApplied.19.044044
Abstract
Quantum sensors offer unparalleled precision, accuracy, and sensitivity for a variety of measurement applications. We report a compact magnetometer based on a ferrimagnetic sensing element in an oscillator architecture that circumvents challenges common to other quantum sensing approaches such as limited dynamic range, limited bandwidth, and dependence on vacuum, cryogenic, or laser components. The device exhibits a fixed, calibration-free response governed by the electron gyromagnetic ratio. Exchange narrowing in the ferrimagnetic material produces sub-MHz transition linewidths despite the high unpaired spin density ( cm). The magnetometer achieves a minimum sensitivity of 100 fT/ to AC magnetic fields of unknown phase and a sensitivity below 200 fT/ over a bandwidth MHz. By encoding magnetic field in frequency rather than amplitude, the device provides a dynamic range in excess of 1 mT. The passive, thermal initialization of the sensor's quantum state requires only a magnetic bias field, greatly reducing power requirements compared to laser-initialized quantum sensors. With additional development, this device promises to be a leading candidate for high-performance magnetometry outside the laboratory, and the oscillator architecture is expected to provide advantages across a wide range of sensing platforms.
arXiv comment18 pages, 4 figures
References in corpus (51)
- Quantum sensing
- High-sensitivity diamond magnetometer with nanoscale resolution
- Nanometer scale quantum thermometry in a living cell
- Optical Magnetometry
- Sensitivity Optimization for NV-Diamond Magnetometry
- Strongly coupled magnons and cavity microwave photons
- Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
- On the Improvement of Frequency Stardards with Quantum Entanglement
- Magnon-photon-phonon entanglement in cavity magnomechanics
- Optical magnetic detection of single-neuron action potentials using quantum defects in diamond
- Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond
- High Cooperativity Cavity QED with Magnons at Microwave Frequencies
- Avoiding power broadening in optically detected magnetic resonance of single NV defects for enhanced DC-magnetic field sensitivity
- Scanning magnetic field microscope with a diamond single-spin sensor
- High Resolution Magnetic Resonance Spectroscopy Using Solid-State Spins
- A subpicotesla diamond magnetometer
- Resolving magnon number states in quantum magnonics
- Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
- Ultra-High Cooperativity Interactions between Magnons and Resonant Photons in a YIG sphere
- Decoherence of dipolar spin ensembles in diamond
- Portable magnetometry for detection of biomagnetism in ambient environments
- Imaging stress and magnetism at high pressures using a nanoscale quantum sensor
- Dissipation-based Quantum Sensing of Magnons with a Superconducting Qubit
- Proton magnetic resonance imaging with a nitrogen-vacancy spin sensor
- Diamond magnetometer enhanced by ferrite flux concentrators
- Broadband magnetometry by infrared-absorption detection of nitrogen-vacancy ensembles in diamond
- Mapping the Microscale Origins of MRI Contrast with Subcellular NV Diamond Magnetometry
- Spin Readout Techniques of the Nitrogen-Vacancy Center in Diamond
- Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control
- Quantum limits to the energy resolution of magnetic field sensors
- Two-dimensional nuclear magnetic resonance spectroscopy with a microfluidic diamond quantum sensor
- Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator
- Robust and accurate electric field sensing with solid state spin ensembles
- All-optical sensing of a single-molecule electron spin
- Solution nuclear magnetic resonance spectroscopy on a nanostructured diamond chip
- Miniature cavity-enhanced diamond magnetometer
- High-sensitivity, spin-based electrometry with an ensemble of nitrogen-vacancy centers in diamond
- Hyperpolarization-enhanced NMR spectroscopy with femtomole sensitivity using quantum defects in diamond
- Experimental Implementations of Cavity-Magnon Systems: from Ultra Strong Coupling to Applications in Precision Measurement
- A Precessing Ferromagnetic Needle Magnetometer
- Imaging domain reversal in an ultrathin van der Waals ferromagnet
- Diamond magnetic microscopy of malarial hemozoin nanocrystals
- Detection of biological signals from a live mammalian muscle using a diamond quantum sensor
- Cavity quantum electrodynamic readout of a solid-state spin sensor
- Advanced bridge (interferometric) phase and amplitude noise measurements
- Two-dimensional nanoscale imaging of gadolinium spins via scanning probe relaxometry with a single spin in diamond
- Optically Enhanced Electric Field Sensing Using Nitrogen-Vacancy Ensembles
- Cavity magnon polariton based precision magnetometry
- Probing topological spin structures using light-polarization and magnetic microscopy
- Fluctuation-dissipation considerations and damping models for ferromagnetic materials
- Comment on "Fluctuation-dissipation considerations and damping models for ferromagnetic thin-films"
Cited by in corpus (6)
- Enhancing Weak magnetic field sensing of cavity-magnon system with dual frequency modulation
- The impact of microwave phase noise on diamond quantum sensing
- Cavity-enhanced solid-state nuclear spin gyroscope
- Demonstration of a Tunable Non-Hermitian Nonlinear Microwave Dimer
- Enhanced Sensing by Geometric Tuning of YIG Spheres: Noise Reduction, Signal Amplification and Directional Magnetic Field Detection
- The Role of Exceptional Points and Transmission Peak Degeneracies in Non-Hermitian Sensing