The article “Quantum Sensing with Optically Accessible Spin Defects in Van der Waals Layered Materials” by Fang et al. discusses recent advancements and potential applications of quantum sensing through optically active spin defects within 2D van der Waals (vdW) materials. The paper emphasizes how these defects, particularly in hexagonal boron nitride (hBN), serve as powerful tools for detecting physical and chemical changes at the nanoscale, such as magnetic fields, temperature, and pressure. The authors highlight the advantages of vdW materials, like their high spatial resolution and compatibility with various heterostructures. They also outline challenges, including short spin coherence times and low quantum efficiencies compared to conventional materials like diamonds, and suggest further research into defect engineering, quantum-photonic integration, and proximity effects to enhance sensor capabilities. Applications span from material sciences to biological sensing, promising advances in areas like DNA sequencing and nanoscale magnetic field mapping.
For more details, please continue reading the full article under the following link:
https://www.nature.com/articles/s41377-024-01630-y
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