Fig. 5: The evolution of the relevant quantities of poor man’s Majorana as a function of the coupling strength t.
From: Enhancing the excitation gap of a quantum-dot-based Kitaev chain
a The evolution of the position of the sweet spot in the phase diagram as a function of t. In b, we depict the evolution of the excitation gap at the sweet spot and the Majorana density ρ and polarization χ on the left quantum dot. c depicts the ground state degeneracy splitting when both quantum dots chemical potentials are detuned away from the sweet spot. As t increases, the amount of splitting diminishes. d Waterfall plots of local conductance profile at the sweet spot for each t. Even though the main peak height decreases as t increases, the side peaks that signify the excitation gap appear at a larger bias and, furthermore, split.
