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

Year: 2017

Authors: Poggiali F., Cappellaro P., Fabbri N.

Autors Affiliation: LENS European Lab Non linear Spect, I-50019 Sesto Fiorentino, Firenze, Italy; Univ Florence, I-50019 Sesto Fiorentino, Firenze, Italy; CNR, INO, I-50125 Florence, Italy; MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA.

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 nonsecular part of the excited-state Hamiltonian of an electronic-nuclear spin system in diamond. Themethod relies on the investigation of the dynamic nuclear polarizationmediated 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.

Journal/Review: PHYSICAL REVIEW B

Volume: 95 (19)      Pages from: 195308-1  to: 195308-8

More Information: This work was supported by European Research Council through Starting Grant Q-SEnS2 (No. 337135), and LaserLab-Europe (Grant Agreement No. 284464, European Commission
KeyWords: Quantum information with solid state qubits, Nitrogen vacancy centers in diamond, Optically detected magnetic resonance
DOI: 10.1103/PhysRevB.95.195308

ImpactFactor: 3.813
Citations: 24
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