论文标题
使用表面电极在环境条件下钻石NV中心的旋转转换的增强旋转电荷转换
Enhancement of spin-to-charge conversion of diamond NV centers at ambient conditions using surface electrodes
论文作者
论文摘要
钻石中的氮呈（NV）中心是一个经过深入研究的缺陷，因为其在量子计量和计算中的潜在应用，尤其是在环境条件下。在任何应用程序中使用NV的关键机制在于能够读取通常在光学上完成的缺陷的旋转状态。然后，光学对比是电子自旋读数保真度的关键指标，也是NV总体性能中的关键限制因素之一。我们提出了一种新的机制，该机制使用自旋转换（SCC）机制与电极结合使用，以通过改变NV能级相对于钻石传导带来改善自旋对比度。理论建模预测，在42％的光学旋转对比度为42％，这将是NV在室温下的最高光学对比度，并且该技术为NV开辟了一系列替代研究途径。
The nitrogen-vacancy (NV) center in diamond is a heavily studied defect due to its potential applications to quantum metrology and computation, particularly in ambient conditions. The key mechanism to using the NV in any application lies in the ability to read out the spin state of the defect which is typically done optically. The optical contrast is then the key metric for electron spin readout fidelity and one of the key limiting factors in the NV's overall performance. We present a new mechanism for high contrast readout using the spin-to-charge conversion (SCC) mechanism in conjunction with an electrode to improve the spin contrast by altering the NV energy levels relative to the diamond conduction band. Theoretical modelling predicts an optical spin contrast at 42% which would be the highest optical contrast for the NV at room temperature and the technique opens up a range of alternative research pathways for the NV which are discussed.
