标题： 混合超导体-空穴系统中的异常约瑟夫森效应 显示英文标题

标题： Anomalous Josephson effect in hybrid superconductor-hole systems

摘要： 我们考虑由空穴掺杂半导体与有限尺寸超导体的电子态耦合组成的混合系统，在这两个子系统中质量符号相反导致在能带反交叉处出现绝缘间隙。因此，增加与超导体的耦合强度可能会通过增强这些绝缘间隙而悖论地抑制半导体中的邻近诱导超导性。我们证明了这种诱导绝缘间隙的存在会导致基于这些混合结构的约瑟夫森结临界超电流表现出特征性的异常行为。我们的发现为利用混合超导体-空穴系统设计稳健的量子计算平台提供了重要的见解。 显示英文摘要

摘要： We consider hybrid systems consisting of a hole-doped semiconductor coupled to electronic states of finite-size superconductors, where the opposite sign of the masses in the two subsystems give rise to insulating gaps at subband anticrossings. Consequently, increasing the coupling strength to the superconductor can paradoxically suppress the proximity-induced superconductivity in the semiconductor by enhancing these insulating gaps. We demonstrate that the presence of such induced insulating gaps leads to a characteristic anomalous behavior of the critical supercurrent in Josephson junctions based on these hybrid structures. Our findings provide important insights for the design of robust quantum computing platforms utilizing hybrid superconductor-hole systems.