All-optical hyperpolarization of electron and nuclear spins in diamond

Abstract

Low thermal polarization of nuclear spins is a primary sensitivity limitation for nuclear magnetic resonance. Here we demonstrate optically pumped (microwave-free) nuclear spin polarization of ${}^{13}\mathrm{C}$ and ${}^{15}\mathrm{N}$ in ${}^{15}\mathrm{N}$-doped diamond. ${}^{15}\mathrm{N}$ polarization enhancements up to $-2000$ above thermal equilibrium are observed in the paramagnetic system ${{\mathrm{N}}_{\mathrm{s}}}^0$. Nuclear spin polarization is shown to diffuse to bulk ${}^{13}\mathrm{C}$ with NMR enhancements of $-200$ at room temperature and $-500$ at $240\mathrm{K}$, enabling a route to microwave-free high-sensitivity NMR study of biological samples in ambient conditions.

5 pages, 5 figures

References in corpus (9)

• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Room temperature quantum bit storage exceeding 39 minutes using ionized donors in 28-silicon
• Optical polarization of nuclear spins in silicon carbide
• Optically induced dynamic nuclear spin polarisation in diamond
• Generation of a coherent electronic spin cluster in diamond
• Towards a room-temperature spin quantum bus in diamond via optical spin injection, transport and detection
• Electron paramagnetic resonance of the ${\mathrm{N}}_2{\mathrm{V}}^{-}$ defect in ${}^{15}\mathrm{N}$-doped synthetic diamond
• Electron paramagnetic resonance and photochromism of ${\mathrm{N}}_3{\mathrm{V}}^0$ in diamond
• Generation of spin-polarized currents via cross-relaxation with dynamically pumped paramagnetic impurities

Cited by in corpus (7)

• Multi-spin-assisted optical pumping of bulk 13C nuclear spin polarization in diamond
• Microwave-assisted cross-polarization of nuclear spin ensembles from optically-pumped nitrogen-vacancy centers in diamond
• Robust techniques for polarization and detection of nuclear spin ensembles
• 13C dynamic nuclear polarization in diamond via a microwave-free 'integrated' cross effect
• Optically-pumped dynamic nuclear hyperpolarization in ${}^{13}$C enriched diamond
• Two-electron-spin ratchets as a platform for microwave-free dynamic nuclear polarization of arbitrary material targets
• Nuclear spin temperature reversal via continuous radio-frequency driving