Fig. 5: Comparison of stability against variation of t and Δ in a two- and three-site Kitaev chain. | Nature Nanotechnology

Fig. 5: Comparison of stability against variation of t and Δ in a two- and three-site Kitaev chain.

From: Enhanced Majorana stability in a three-site Kitaev chain

Fig. 5: Comparison of stability against variation of t and Δ in a two- and three-site Kitaev chain.The alternative text for this image may have been generated using AI.

a, Conductance spectroscopy of a two-site chain as a function of VH1, which controls the magnitude of t1 and Δ1. QD3 is kept off-resonance. Pink arrows indicate the t1 = Δ1 sweet spot, which appears twice owing to a reproducible gate jump indicated by the blue arrow. b, QD3 is brought into resonance with the other two QDs in order to measure the spectrum of a three-site chain. Here the zero-bias conductance peak persists over the entire VH1 range >40 mV. See also Extended Data Fig. 9 for high-resolution scans around the left two-site chain sweet spot as well as the right one.

Back to article page