Figure 4
From: Role of Majorana fermions in high-harmonic generation from Kitaev chain
High-harmonic spectrum with and without Majorana zero modes of the 1D superconducting Kitaev chain with open boundary condition (OBC). Harmonic spectrum where for both occupied and unoccupied MZM states are not considered for (a) topological phase \(\mu /t_{0} = 1.8\), and (b) trivial superconducting phase \(\mu /t_{0} = 2.2\). Harmonic spectrum originating only from occupied MZM state for (c) topological phase \(\mu /t_{0} = 1.8\), and (d) trivial superconducting phase \(\mu /t_{0} = 2.2\). A linearly polarised laser pulse with a peak amplitude of 30 MV/m and 9.1 \(\upmu\)m wavelength having ten optical cycles with sine squared envelope is used to obtain the spectrum.
