Figure 4 | Scientific Reports

Figure 4

From: Magnetic-flux-driven topological quantum phase transition and manipulation of perfect edge states in graphene tube

Figure 4

Schematic illustration of the manipulation for a perfect edge state in a graphene tube, which is represented by a red circle.

When varying the flux slowly, state (a1) can evolve to (a2) and (a3), where (a2) represents a maximal entangled state. (b1) and (b2) are plots of the fidelities under the control of Gaussian pulse fluxes with several typical σ. Here the time t is in units of 1/Δ.

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