Robust optical readout and characterization of nuclear spin transitions in nitrogen-vacancy ensembles in diamond

Abstract

Nuclear spin ensembles in diamond are promising candidates for quantum sensing applications, including rotation sensing. Here we perform a characterization of the optically detected nuclear-spin transitions associated with the 14N nuclear spin within diamond nitrogen vacancy (NV) centers. We observe nuclear-spin-dependent fluorescence with the contrast of optically detected 14N nuclear Rabi oscillations comparable to that of the NV electron spin. Using Ramsey spectroscopy, we investigate the temperature and magnetic-field dependence of the nuclear spin transitions in the 77.5-420 K and 350-675 G range, respectively. The nuclear quadrupole coupling constant Q was found to vary with temperature T yielding d|Q|/dT=-35.0(2) Hz/K at T=297 K. The temperature and magnetic field dependencies reported here are important for quantum sensing applications such as rotation sensing and potentially for applications in quantum information processing.

arXiv commentMain text: 6 pages, 4 figures. Supplemental Information: 3 pages, 3 figures

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• Quantum sensing
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Cited by in corpus (10)

• Nuclear Spin Gyroscope based on the Nitrogen Vacancy Center in Diamond
• Demonstration of diamond nuclear spin gyroscope
• All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond
• Characterizing temperature and strain variations with qubit ensembles for their robust coherence protection
• Robust Nuclear Spin Polarization via Ground-State Level Anti-Crossing of Boron Vacancy Defects in Hexagonal Boron Nitride
• Proposal for the search for new spin interactions at the micrometer scale using diamond quantum sensors
• Quantum control of nuclear spin qubits in a rapidly rotating diamond
• Probing the Evolution of Electron Spin Wavefunction of NV Center in diamond via Pressure Tuning
• Tunable Gyromagnetic Augmentation of Nuclear Spins in Diamond
• Nuclear spin relaxation in solid state defect quantum bits via electron-phonon coupling in their optical excited state