论文标题
室温下6H-SIC中Spin-3/2硅空位中心的光学自旋初始化
Optical spin initialization of spin-3/2 silicon vacancy centers in 6H-SiC at room temperature
论文作者
论文摘要
碳化硅中的硅位置空位已被提议作为钻石中的氮气空位中心的替代品，用于旋转型和量子技术。这些应用程序的重要前提是将Qubit的初始化成特定的量子状态。在这项工作中，我们研究了6H-SIC中自旋3/2负电荷空缺的光学对齐。使用时间分辨的光学检测到的磁共振技术，我们连贯控制硅空置旋转集合并测量所有三个过渡的狂犬病频率和自旋静态弛豫时间。然后，为了研究硅空置旋转集合的光学初始化过程，空位旋转集合在不同的基础状态中制备并在光学上激发。我们描述了一个简单的速率方程模型，该模型可以解释观察到的行为并确定相关速率常数。
Silicon vacancies in silicon carbide have been proposed as an alternative to nitrogen vacancy centers in diamonds for spintronics and quantum technologies. An important precondition for these applications is the initialization of the qubits into a specific quantum state. In this work, we study the optical alignment of the spin 3/2 negatively charged silicon vacancy in 6H-SiC. Using a time-resolved optically detected magnetic resonance technique, we coherently control the silicon vacancy spin ensemble and measure Rabi frequencies and spin-lattice relaxation time of all three transitions. Then to study the optical initialization process of the silicon vacancy spin ensemble, the vacancy spin ensemble is prepared in different ground states and optically excited. We describe a simple rate equation model that can explain the observed behaviour and determine the relevant rate constants.
