标题： 自旋相干点腔系统输运光谱 显示英文标题

标题： Transport Spectroscopy of a Spin-Coherent Dot-Cavity System

摘要： 量子工程需要具有超越器件尺寸和操作时间的量子相干性的可控人工系统。 这可以通过几何受限的低维电子结构嵌入超净材料中来实现，显著的例子包括人工原子(量子点)和量子围栏(电子腔)。 结合这两种结构，我们在高迁移率的二维电子气中实现了介观耦合点-腔系统，并在强点-腔耦合区域获得了扩展的自旋单态。 构建这种扩展的量子态为非局域自旋耦合提供了一条可行的途径，适用于量子信息处理。 显示英文摘要

摘要： Quantum engineering requires controllable artificial systems with quantum coherence exceeding the device size and operation time. This can be achieved with geometrically confined low-dimensional electronic structures embedded within ultraclean materials, with prominent examples being artificial atoms (quantum dots) and quantum corrals (electronic cavities). Combining the two structures, we implement a mesoscopic coupled dot-cavity system in a high-mobility two-dimensional electron gas, and obtain an extended spin-singlet state in the regime of strong dot-cavity coupling. Engineering such extended quantum states presents a viable route for nonlocal spin coupling that is applicable for quantum information processing.