Unique Signatures of Topological Phases in Two-Dimensional THz Spectroscopy

被引：6
|
作者：
Gerken, Felix [1 ,2 ]
Posske, Thore [1 ,2 ]
Mukamel, Shaul [3 ,4 ]
Thorwart, Michael [1 ,2 ]
机构：
[1] Univ Hamburg, Inst Theoret Phys 1, Notkestr 9, D-22607 Hamburg, Germany
[2] Hamburg Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany
[3] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 01期
基金：
美国国家科学基金会;
关键词：
CONTINUOUS SYMMETRY GROUP; NON-ABELIAN STATISTICS; LONG-RANGE ORDER; MAJORANA FERMIONS; QUANTUM; DESTRUCTION; SYSTEMS; ANYONS;
D O I：
10.1103/PhysRevLett.129.017401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We develop a microscopic theory for the two-dimensional (2D) spectroscopy of one-dimensional topological superconductors. We consider a ring geometry of an archetypal topological superconductor with periodic boundary conditions, bypassing energy-specific differences caused by topologically protected or trivial boundary modes that are hard to distinguish. We show numerically and analytically that the cross-peak structure of the 2D spectra carries unique signatures of the topological phases of the chain. Our work reveals how 2D spectroscopy can identify topological phases in bulk properties.
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页数：6
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