标题： 使用具有良好传输通道的铝结实现 $\cos(2\varphi)$ 约瑟夫森元件 显示英文标题

标题： Towards a $\cos(2\varphi)$ Josephson element using aluminum junctions with well-transmitted channels

摘要： 我们介绍了一种新颖的方法来制造全铝约瑟夫森结，这些结具有高传输的导电通道。 这种特性通常与需要复杂制造工艺的结构相关联，例如原子接触或基于半导体纳米线和二维材料的混合结。 相比之下，我们的方法完全依赖于标准的纳米加工技术。 由此产生的器件在其电流-电压特性中表现出高传输结的关键特征——多次安德烈夫反射（MAR）。 此外，我们提出了一种基于这些结的简单超导电路设计，从而实现了奇偶保护量子比特的实现。 显示英文摘要

摘要： We introduce a novel method for fabricating all-aluminum Josephson junctions with highly transmitted conduction channels. Such properties are typically associated with structures requiring intricate fabrication processes, such as atomic contacts or hybrid junctions based on semiconducting nanowires and 2D materials. In contrast, our approach relies solely on standard nanofabrication techniques. The resulting devices exhibit a key signature of high-transmission junctions - Multiple Andreev Reflections (MAR) - in their current-voltage characteristics. Furthermore, we propose a straightforward superconducting circuit design based on these junctions, enabling the implementation of a parity-protected qubit.