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Quantum Sensing of Spin Dynamics Using Boron-Vacancy Centers in Hexagonal Boron Nitride

Quantum Sensing of Spin Dynamics Using Boron-Vacancy Centers in Hexagonal Boron Nitride

  • Optically active, spin bearing defects embedded in solid-state systems are appealing for quantum sensing of materials and for quantum science and engineering

  • Spin-sensitive photoluminescence of these spin defects in van der Waals based materials, such as the boron-vacancy (BV) centers in hexagonal boron nitride (h-BN), enables spatially localized, quantum sensing of weak static and dynamic magnetic fields

  • Using relaxometry, the team optically detected ferromagnetic resonance  (ODFMR) in yttrium iron garnet (YIG) demonstrating sensitive detection of magnon dynamics

  • This work establishes BV centers in h-BN as a modular quantum sensing platform that can be seamlessly integrated with emergent and vdW systems to probe a wide range of static and dynamic phenomena

Das, et al., Phys. Rev. Lett 133 166704 (2024)

Figure 1. (a) Schematic of BV center in hBN (b) Regions of exfoliated hBN containing BV centers created by scanned Ga ion-irradiation are visible in hBN exfoliated onto a microwave waveguide on top of the sample (c) Optically detected magnetic resonance of BV centers showing expected linear dispersion (magnetic field perpendicular to the plane) (d) optically detected FMR of YIG employing relaxometry of BVs by magnons.
Figure 1. (a) Schematic of BV center in hBN (b) Regions of exfoliated hBN containing BV centers created by scanned Ga ion-irradiation are visible in hBN exfoliated onto a microwave waveguide on top of the sample (c) Optically detected magnetic resonance of BV centers showing expected linear dispersion (magnetic field perpendicular to the plane) (d) optically detected FMR of YIG employing relaxometry of BVs by magnons.
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Quantum Sensing of Spin Dynamics Using Boron-Vacancy Centers in Hexagonal Boron Nitride

Physical Review Letters
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Center for Emergent Materials

The Center for Emergent Materials (CEM) performs innovative multidisciplinary science focused on discovery and engineering of emergent materials to enable novel phenomena and phases.