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

Area of Science:

• Quantum sensing
• Solid-state quantum systems
• Materials science

Background:

• Spin defects in solid-state systems are promising for quantum sensing and quantum science.
• Optically active spin defects, like the boron-vacancy (V_{B}^{-}) center in hexagonal boron nitride, can detect magnetic fields.
• The application of V_{B}^{-} centers for probing spin dynamics in magnetic systems remains undemonstrated.

Purpose of the Study:

• To demonstrate the utility of V_{B}^{-} centers for probing spin dynamics in magnetic systems.
• To establish V_{B}^{-} centers as a versatile sensing platform for emergent quantum materials.
• To investigate the integration of V_{B}^{-} centers with magnetic materials for advanced sensing applications.

Main Methods:

• Utilizing V_{B}^{-} centers as quantum sensors.
• Experimentally probing uniform mode magnon dynamics.
• Performing optically detected ferromagnetic resonance spectroscopy on thin magnetic films.

Main Results:

• Successful experimental probing of uniform mode magnon dynamics using V_{B}^{-} centers.
• Demonstration of optical ferromagnetic resonance spectroscopy with V_{B}^{-} centers.
• Validation of V_{B}^{-} centers' capability to sense spin dynamics in magnetic thin films.

Conclusions:

• V_{B}^{-} centers can effectively probe spin dynamics in magnetic systems.
• This work establishes V_{B}^{-} centers as a modular sensing platform for quantum materials.
• The findings pave the way for integrating V_{B}^{-} centers with diverse magnetic systems for advanced quantum sensing.