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 (26)

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• Optical polarization of nuclear spins in silicon carbide
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• Excited State Spectroscopy of Boron Vacancy Defects in Hexagonal Boron Nitride using Time-Resolved Optically Detected Magnetic Resonance
• Room-temperature control and electrical readout of individual nitrogen-vacancy nuclear spins
• Demonstration of diamond nuclear spin gyroscope
• Learning temporal data with variational quantum recurrent neural network
• Excited-state optically detected magnetic resonance of spin defects in hexagonal boron nitride
• 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
• Quasi-Floquet prethermalization in a disordered dipolar spin ensemble in diamond
• Dynamic ${}^{14}\mathrm{N}$ nuclear spin polarization in nitrogen-vacancy centers in diamond
• Experimental Realization of Discrete Time Quasi-Crystals
• Characterizing temperature and strain variations with qubit ensembles for their robust coherence protection
• Temperature dependent spin-phonon coupling of boron-vacancy centers in hexagonal boron nitride
• Diamond Nitrogen-Vacancy Center Magnetometry: Advances and Challenges
• Effect of inter-system crossing rates and optical illumination on the polarization of nuclear spins nearby nitrogen-vacancy centers
• Optically Detected Magnetic Resonances of Nitrogen-Vacancy Ensembles in 13C Enriched Diamond
• Appearance of objectivity for NV centers interacting with dynamically polarized nuclear environment
• Sensitive Magnetic Control of Ensemble Nuclear Spin Hyperpolarisation in Diamond
• Nuclear spin temperature reversal via continuous radio-frequency driving
• Nuclear spin relaxation in solid state defect quantum bits via electron-phonon coupling in their optical excited state
• Optimal microwave control pulse for nuclear spin polarization and readout in dense nitrogen-vacancy ensembles in diamond
• Principles and Techniques of the Quantum Diamond Microscope