Local and bulk 13C hyperpolarization in NV-centered diamonds at variable fields and orientations

Abstract

Polarizing nuclear spins is of fundamental importance in biology, chemistry and physics. Methods for hyperpolarizing 13C nuclei from free electrons in bulk, usually demand operation at cryogenic temperatures. Room-temperature approaches targeting diamonds with nitrogen-vacancy (NV) centers could alleviate this need, but hitherto proposed strategies lack generality as they demand stringent conditions on the strength and/or alignment of the magnetic field. We report here an approach for achieving efficient electron->13C spin alignment transfers, compatible with a broad range of magnetic field strengths and field orientations with respect to the diamond crystal. This versatility results from combining coherent microwave- and incoherent laser-induced transitions between selected energy states of the coupled electron-nuclear spin manifold. 13C-detected Nuclear Magnetic Resonance (NMR) experiments demonstrate that this hyperpolarization can be transferred via first-shell or via distant 13Cs, throughout the nuclear bulk ensemble. This method opens new perspectives for applications of diamond NV centers in NMR, and in quantum information processing.

8 pages, 4 figures

References in corpus (10)

• Many-Body Physics with Ultracold Gases
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Thermodynamical Control by Frequent Quantum Measurements
• NMR quantum simulation of localization effects induced by decoherence
• Zeno and anti-Zeno polarization control of spin-ensembles by induced dephasing
• Optical hyperpolarization of 13C nuclear spins in nanodiamond ensembles
• Coherence of an optically illuminated single nuclear spin qubit
• Recursive polarization of nuclear spins in diamond at arbitrary magnetic fields
• Sensitive Magnetic Control of Ensemble Nuclear Spin Hyperpolarisation in Diamond
• Room-Temperature in situ Nuclear Spin Hyperpolarization from Optically-Pumped Nitrogen Vacancy Centers in Diamond

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