论文标题
部分可观测时空混沌系统的无模型预测
Optical Spin Initialisation and Readout with a Cavity-Coupled Quantum Dot in an In-Plane Magnetic Field
论文作者
论文摘要
连接到光腔的带电半导体量子点（QD）的自旋是高保真自旋旋转界面的有前途的候选者。腔体有选择地修饰光学转变的衰减速率，以便在单个磁场几何形状中可以旋转初始化，操纵和读数。通过执行空腔QED计算，我们表明具有单个线性偏振模式的空腔可以同时支持高保真光学自旋初始化和读数，并在单个平面（VOIGT几何）磁场中同时支持。此外，我们证明，在实验上有利的驾驶方案中，单模式腔始终优于双模式腔。当我们的分析与VOIGT几何形状字段中的既定控制方法结合使用时，为高保真初始化和读数提供了最佳参数制度，并在两种空腔配置中提供了相干控制，从而为QD Spin-Photon界面的设计和开发提供了见解，作为量子网络NODES的基础和生成光量图的基础。
The spin of a charged semiconductor quantum dot (QD) coupled to an optical cavity is a promising candidate for high fidelity spin-photon interfaces; the cavity selectively modifies the decay rates of optical transitions such that spin initialisation, manipulation, and readout are all possible in a single magnetic field geometry. By performing cavity QED calculations, we show that a cavity with a single, linearly-polarised mode can simultaneously support both high-fidelity optical spin initialisation and readout in a single, in-plane (Voigt geometry) magnetic field. Furthermore, we demonstrate that single mode cavities always outperform bi-modal cavities in experimentally favourable driving regimes. Our analysis, when combined with established methods of control in a Voigt geometry field, provides optimal parameter regimes for high-fidelity initialisation and readout, and coherent control in both cavity configurations, providing insights for the design and development of QD spin-photon interfaces as the basis of quantum network nodes and for the generation of photonic graph states.
