Phys.org September 3, 2021
The photoluminescence and the contrast of the optically detected magnetic resonance (ODMR) of hexagonal boron nitride (hBN) spin defects are relatively low so far, which limits their sensitivity. An international team of researchers (USA – Purdue University, Australia) used a gold film to increase the brightness of spin qubits by up to 17-fold. The gold film supports the surface plasmon that can speed up photon emission and hence more signals. They improved the contrast of their magnetic resonance signal by a factor of 10 by optimizing the design of a microwave waveguide substantially improving the sensitivity of these spin defects for detecting magnetic field, local temperature, and local pressure…read more. TECHNICAL ARTICLEÂ Â 1Â Â Â 2Â
Abstract. Credit: Nano Lett. 2021, XXXX, XXX, XXX-XXX, September 2, 2021Â