Dynamics of frequency-swept nuclear spin optical pumping in powdered diamond at low magnetic fields
arXiv:1902.06805 · doi:10.1073/pnas.1811994116
Abstract
A broad effort is underway to improve the sensitivity of nuclear magnetic resonance through the use of dynamic nuclear polarization. Nitrogen-vacancy (NV) centers in diamond offer an appealing platform because these paramagnetic defects can be optically polarized efficiently at room temperature. However, work thus far has been mainly limited to single crystals because most polarization transfer protocols are sensitive to misalignment between the NV and magnetic field axes. Here we study the spin dynamics of NV-13C pairs in the simultaneous presence of optical excitation and microwave frequency sweeps at low magnetic fields. We show that a subtle interplay between illumination intensity, frequency sweep rate, and hyperfine coupling strength leads to efficient, sweep-direction-dependent 13C spin polarization over a broad range of orientations of the magnetic field. In particular, our results strongly suggest that finely-tuned, moderately coupled nuclear spins are key to the hyperpolarization process, which makes this mechanism distinct from other known dynamic polarization channels. These findings pave the route to applications where powders are intrinsically advantageous, including the hyper-polarization of target fluids in contact with the diamond surface or the use of hyperpolarized particles as contrast agents for in-vivo imaging.
References in corpus (17)
- The nitrogen-vacancy colour centre in diamond
- The Quantum Jump Approach to Dissipative Dynamics in Quantum Optics
- Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
- Observation of an environmentally insensitive solid state spin defect in diamond
- Optical polarization of nuclear spins in silicon carbide
- Orientation independent room-temperature optical 13C hyperpolarization in powdered diamond
- Local and bulk 13C hyperpolarization in NV-centered diamonds at variable fields and orientations
- The neutral silicon-vacancy center in diamond: spin polarization and lifetimes
- Optically induced dynamic nuclear spin polarisation in diamond
- Optical hyperpolarization of 13C nuclear spins in nanodiamond ensembles
- Enhanced dynamic nuclear polarization via swept microwave frequency combs
- Multi-spin-assisted optical pumping of bulk 13C nuclear spin polarization in diamond
- Characterization of hyperfine interaction between an NV electron spin and a first-shell 13C nuclear spin in diamond
- Recursive polarization of nuclear spins in diamond at arbitrary magnetic fields
- Investigation of room temperature multispin-assisted bulk diamond 13C hyperpolarization at low magnetic fields
- Characterization of hyperfine interaction between single electron and single nuclear spins in diamond assisted by quantum beat from the nuclear spin
- Sensitive Magnetic Control of Ensemble Nuclear Spin Hyperpolarisation in Diamond
Cited by in corpus (22)
- Enhanced dynamic nuclear polarization via swept microwave frequency combs
- Hyperpolarized relaxometry based nuclear T1 noise spectroscopy in hybrid diamond quantum registers
- 13C dynamic nuclear polarization in diamond via a microwave-free 'integrated' cross effect
- Interference in Atomic Magnetometry
- Rapidly enhanced spin polarization injection in an optically pumped spin ratchet
- Two-electron-spin ratchets as a platform for microwave-free dynamic nuclear polarization of arbitrary material targets
- High temperature annealing enhanced diamond 13C hyperpolarization at room temperature
- Proposal for the search for new spin interactions at the micrometer scale using diamond quantum sensors
- Quantum bath control with nuclear spin state selectivity via pulse-adjusted dynamical decoupling
- Experimental observation of a time rondeau crystal: Temporal Disorder in Spatiotemporal Order
- Magnetic-field-induced delocalization in hybrid electron-nuclear spin ensembles
- Sensing with discrete time crystals
- Electron-to-nuclear spectral mapping via "Galton board" dynamic nuclear polarization
- Level-crossing induced spin phenomena in SiC: a theoretical study
- Optimization of a quantum control sequence for initializing an NV spin register
- Direct Readout of Nitrogen-Vacancy Hybrid-Spin Quantum Register in Diamond by Photon Arrival Time Analysis
- Maximizing information obtainable by quantum sensors through the Quantum Zeno Effect
- Nuclear spin temperature reversal via continuous radio-frequency driving
- Continuously tracked, stable, large excursion trajectories of dipolar coupled nuclear spins
- "Galton board" nuclear hyperpolarization
- Optically pumped spin polarization as a probe of many-body thermalization
- Robust external spin hyperpolarization of quadrupolar nuclei enabled by strain