A method for robust spin relaxometry in the presence of imperfect state preparation
arXiv:2512.22739 · doi:10.1002/qute.70291
Abstract
Spin relaxometry based on quantum spin systems has developed as a valuable tool in medical and condensed matter systems, offering the advantage of operating without the need for external DC or RF fields. Spin relaxometry with nitrogen-vacancy (NV) centers has been applied to paramagnetic sensing using both single crystal diamond and nanodiamond materials. However, these methods often suffer from artifacts and systematic uncertainties, particularly due to imperfect spin state preparation, leading to artificially fast T relaxation times. Current analysis techniques fail to adequately account for these issues, limiting the precision of parameter estimation. In this work, we introduce a minimal fitting procedure that enables more robust parameter estimation in the presence of imperfect spin polarization. Our model improves upon existing approaches by offering more accurate fits and provides a framework for efficiently parallelizing single-spin dynamics studies.
13 pages, 3 figures in manuscript, 7 supplementary figures in appendix
References in corpus (24)
- Quantum sensing
- High-sensitivity diamond magnetometer with nanoscale resolution
- A robust, scanning quantum system for nanoscale sensing and imaging
- Stretched Exponential Relaxation Arising from a Continuous Sum of Exponential Decays
- Temperature and magnetic field dependent longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond
- Magnetic spin imaging under ambient conditions with sub-cellular resolution
- Spin dynamics in the optical cycle of single nitrogen-vacancy centres in diamond
- Probing surface noise with depth-calibrated spins in diamond
- Identifying and mitigating charge instabilities in shallow diamond nitrogen-vacancy centers
- Detection of atomic spin labels in a lipid bi-layer using a single-spin nanodiamond probe
- Depolarization dynamics in a strongly interacting solid-state spin ensemble
- Double-quantum spin-relaxation limits to coherence of near-surface nitrogen-vacancy centers
- Spin properties of dense near-surface ensembles of nitrogen-vacancy centres in diamond
- All-optical sensing of a single-molecule electron spin
- Single spin stochastic optical reconstruction microscopy
- Quantum sensing and imaging of spin-orbit-torque-driven spin dynamics in noncollinear antiferromagnet Mn3Sn
- Tracking Temperature Dependent Relaxation Times of Individual Ferritin Nanomagnets with a Wide-band Quantum Spectrometer
- Single Spin Magnetic Resonance
- Relaxometry and dephasing imaging of superparamagnetic magnetite nanoparticles using a single qubit
- Wide-band, nanoscale magnetic resonance spectroscopy using quantum relaxation of a single spin in diamond
- Two-dimensional nanoscale imaging of gadolinium spins via scanning probe relaxometry with a single spin in diamond
- Longitudinal spin-relaxation in nitrogen-vacancy centers in electron irradiated diamond
- Impact of Charge Conversion on NV-Center Relaxometry
- Single Nitrogen-Vacancy-NMR of Amine-Functionalized Diamond Surfaces