Measurement of the excited-state transverse hyperfine coupling in NV centers via dynamic nuclear polarization

Abstract

Precise knowledge of a quantum system's Hamiltonian is a critical pre-requisite for its use in many quantum information technologies. Here, we report a method for the precise characterization of the non-secular part of the excited-state Hamiltonian of an electronic-nuclear spin system in diamond. The method relies on the investigation of the dynamic nuclear polarization mediated by the electronic spin, which is currently exploited as a primary tool for initializing nuclear qubits and performing enhanced nuclear magnetic resonance. By measuring the temporal evolution of the population of the ground-state hyperfine levels of a nitrogen-vacancy center, we obtain the first direct estimation of the excited-state transverse hyperfine coupling between its electronic and nitrogen nuclear spin. Our method could also be applied to other electron-nuclear spin systems, such as those related to defects in silicon carbide.

References in corpus (12)

• Quantum Computing
• High-sensitivity diamond magnetometer with nanoscale resolution
• Scanning magnetic field microscope with a diamond single-spin sensor
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Spin dynamics in the optical cycle of single nitrogen-vacancy centres in diamond
• Efficient readout of a single spin state in diamond via spin-to-charge conversion
• Excited-state spectroscopy using single-spin manipulation in diamond
• Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonance
• Optical polarization of nuclear spins in silicon carbide
• Long-term data storage in diamond
• Optical polarization of nuclear ensembles in diamond
• Time-averaging within the excited state of the nitrogen-vacancy centre in diamond

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• Dynamic ${}^{14}\mathrm{N}$ nuclear spin polarization in nitrogen-vacancy centers in diamond
• How to detect qubit-environment entanglement generated during qubit dephasing
• Optical Control of a Single Nuclear Spin in the Solid State
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• Coherent Microwave Control of a Nuclear Spin Ensemble at Room Temperature
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• Nuclear spin relaxation in solid state defect quantum bits via electron-phonon coupling in their optical excited state
• Nitrogen-Vacancy Emission from Nanodiamond: Size, Depth, and Surroundings
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