论文标题
芯片集成涡流操作
Chip-Integrated Vortex Manipulation
论文作者
论文摘要
长期以来，Abrikosov涡流被视为在低温逻辑电路（1）和内存设备（2-4）中编码经典信息的手段。尽管可以使用局部探针（5-11）来控制各个涡旋，但针对多个涡流的控制性仍然具有挑战性。涡旋逻辑设备需要手段在工程固定电势之间可靠地穿梭选定的涡旋。同时，所有其他涡流都应固定在其确切位置。在这里，我们使用在NBSE $ _2 $ layer下方模式的NB循环演示了此类功能。鱿鱼尖（SOT）显微镜表明，环可以将涡流定位在指定的精度高于100 nm的位置；他们可以意识到涡流的“推动”和“拉”操作，直到3 $ $ m。此类操作的连续应用将相邻循环之间的涡流穿梭。我们的结果可以用作将涡流整合到未来量子电路中的手段。令人惊讶的是，我们能够演示蜿蜒的操作。如果在拓扑超导体中实现这种绕组，则被认为是未来拓扑量子信息处理的重要组成部分（12-17）。
Abrikosov Vortices have long been considered as means to encode classical information in low-temperature logic circuits (1) and memory devices (2-4). Although it is possible to control individual vortices using local probes (5-11), scalability towards the control of of multiple vortices remains challenging. Vortex logic devices require means to shuttle selected vortices reliably over long distances between engineered pinning potentials. Concomitantly, all other vortices should remains fixed to their precise locations. Here we demonstrate such capabilities using Nb loops patterned below a NbSe$_2$ layer. SQUID-on-Tip (SOT) microscopy reveals that the loops can position vortices in sites designated to a precision better than 100 nm; they can realize "push" and "pull" operations of vortices as far as 3$μ$m. Successive application of such operations shuttles a vortex between adjacent loops. Our results may be used as means to integrate vortices in future quantum circuitry. Strikingly, we are able to demonstrate a winding operation. Such winding, if realized in topological superconductors, is considered an essential part of future topological quantum information processing (12-17).
