Non-Abelian monopoles in the multiterminal Josephson effect

被引：0

作者：

Xie, Hong-Yi ^{[1
]}

Hasan, Jaglul ^{[2
]}

Levchenko, Alex ^{[2
]}

机构：

[1] Beijing Acad Quantum Informat Sci, Div Quantum State Matter, Beijing 100193, Peoples R China

[2] Univ Wisconsin Madison, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW B | 2022年 / 105卷 / 24期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevB.105.L241404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this Letter we present a detailed theoretical analysis for the spectral properties of Andreev bound states in the multiterminal Josephson junctions by employing a symmetry-constrained scattering matrix approach. We find that in the synthetic multidimensional space of superconducting phases, crossings of Andreev bands may support non-Abelian SU(2) monopoles with a topological charge characterized by the second class Chern number. We propose that these topological defects can be detected via a nonlinear response measurement of the current autocorrelations. In addition, multiterminal Josephson junction devices can be tested as a hardware platform for realizing holonomic quantum computation.

引用

页数：7

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