Optical polarization of nuclear ensembles in diamond

Abstract

We report polarization of a dense nuclear-spin ensemble in diamond and its dependence on magnetic field and temperature. The polarization method is based on the transfer of electron spin polarization of negatively charged nitrogen vacancy color centers to the nuclear spins via the excited-state level anti-crossing of the center. We polarize 90% of the 14N nuclear spins within the NV centers, and 70% of the proximal 13C nuclear spins with hyperfine interaction strength of 13-14 MHz. Magnetic-field dependence of the polarization reveals sharp decrease in polarization at specific field values corresponding to cross-relaxation with substitutional nitrogen centers, while temperature dependence of the polarization reveals that high polarization persists down to 50 K. This work enables polarization of the 13C in bulk diamond, which is of interest in applications of nuclear magnetic resonance, in quantum memories of hybrid quantum devices, and in sensing.

8 pages, 5 figures

References in corpus (4)

• Solid state quantum memory using the 31P nuclear spin
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Excited-state spectroscopy using single-spin manipulation in diamond
• Time-averaging within the excited state of the nitrogen-vacancy centre in diamond

Cited by in corpus (11)

• Micrometer-scale Magnetic Imaging of Geological Samples Using a Quantum Diamond Microscope
• Optical polarization of nuclear spins in silicon carbide
• Multi-spin-assisted optical pumping of bulk 13C nuclear spin polarization in diamond
• Pump-Enhanced Continuous-Wave Magnetometry using Nitrogen-Vacancy Ensembles
• Experimental investigation of quantum correlations in a two-qutrit spin system
• Isotopic control of the boron-vacancy spin defect in hexagonal boron nitride
• Optically Detected Magnetic Resonances of Nitrogen-Vacancy Ensembles in 13C Enriched Diamond
• Appearance of objectivity for NV centers interacting with dynamically polarized nuclear environment
• Nuclear spin temperature reversal via continuous radio-frequency driving
• Sensitive Magnetic Control of Ensemble Nuclear Spin Hyperpolarisation in Diamond
• Principles and Techniques of the Quantum Diamond Microscope