论文标题
可调的平面约瑟夫森连接处由时间依赖的旋转轨道耦合驱动
Tunable planar Josephson junctions driven by time-dependent spin-orbit coupling
论文作者
论文摘要
将常规的超导体与常见的III-V半导体集成在一起，为实现可调的Josephson连接（JJS）及其应用提供了一种多功能平台。我们建议，通过栅极控制的时间依赖性自旋轨耦合，也可以强烈修改电流关系和约瑟夫森能量，并提供一种机制来驱动JJ动力学，即使没有任何偏置电流。我们表明，稳定相之间的过渡是通过简单的线性变化来实现自旋轨道耦合强度的，而过渡速率可以超过栅极诱导的电场GHz的变化，从而通过数量级的顺序变化。恒定有效磁场与变化的自旋轨道耦合之间的相互作用对超导旋转，控制Majorana结合状态和新兴量子的直接影响。我们认为，寻求容忍故障的量子计算的拓扑超导性提供了更简单的超导电子和自旋形式的应用。
Integrating conventional superconductors with common III-V semiconductors provides a versatile platform to implement tunable Josephson junctions (JJs) and their applications. We propose that with gate-controlled time-dependent spin-orbit coupling, it is possible to strongly modify the current-phase relations and Josephson energy and provide a mechanism to drive the JJ dynamics, even in the absence of any bias current. We show that the transition between stable phases is realized with a simple linear change in the strength of the spin-orbit coupling, while the transition rate can exceed the gate-induced electric field GHz changes by an order of magnitude. The resulting interplay between the constant effective magnetic field and changing spin-orbit coupling has direct implications for superconducting spintronics, controlling Majorana bound states, and emerging qubits. We argue that topological superconductivity, sought for fault-tolerant quantum computing, offers simpler applications in superconducting electronics and spintronics.
