Unique Signatures of Topological Phases in Two-Dimensional THz Spectroscopy
Mesoscale and Nanoscale Physics
2022-07-11 v1
Abstract
We develop a microscopic theory for the two-dimensional spectroscopy of one-dimensional topological superconductors. We consider a ring geometry as a realization of the Kitaev chain with periodic boundary conditions. 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, bypassing energy-specific differences caused by topologically protected or trivial boundary modes that are otherwise hard to distinguish.
Keywords
Cite
@article{arxiv.2202.00030,
title = {Unique Signatures of Topological Phases in Two-Dimensional THz Spectroscopy},
author = {Felix Gerken and Thore Posske and Shaul Mukamel and Michael Thorwart},
journal= {arXiv preprint arXiv:2202.00030},
year = {2022}
}
Comments
16 pages, 10 figures