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All-optical hyperpolarization of electron and nuclear spins in diamond

By Ben L. Green, Ben G. Breeze, Gregory J. Rees, John V. Hanna, Jyh-Pin Chou, Viktor Ivády, Adam Gali and Mark E. Newton

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 $\mathrm{N_s}^{0}$. Nuclear spin polarization is shown to diffuse to bulk $^{13}\mathrm{C}$ with NMR enhancements of $-200$ at room temperature and $-500$ at $\mathrm{240~K}$, enabling a route to microwave-free high-sensitivity NMR study of biological samples in ambient conditions.Comment: 5 pages, 5 figure

Topics: Condensed Matter - Mesoscale and Nanoscale Physics, Quantum Physics
Publisher: 'American Physical Society (APS)'
Year: 2017
DOI identifier: 10.1103/PhysRevB.96.054101
OAI identifier: oai:arXiv.org:1610.03823

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