Acta Physica Sinica, Volume. 69, Issue 11, 117302-1(2020)
Fig. 1. Topological states in 2D. Top row: Schematic comparison of a 2D chiral superconductor and the QH/QAH state. In both systems, TR symmetry is broken and the edge states carry a definite chirality. Bottom row: Schematic comparison of a 2D TR-invariant TSC and the QSH insulator. Both systems preserve TR symmetry and have a helical pair of edge states, where opposite spin states counterpropagate. The dashed lines show that the edge states of the superconductors are Majorana fermions so that the
Fig. 2. Chiral Majorana fermion: (a) Basic idea: the quantum anomalous Hall chiral edge state splits into two chiral Majorana fermions; (b) the hybrid quantum anomalous Hall-superconductor device for chiral Majorana fermion. Adapted from Ref. [41], APS.
Fig. 3. Braiding of chiral Majorana fermion: (a) The QAH-TSC-QAH device realize the non-Abelian gate which is equivalent to a Hadamard gate
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Jing Wang.
Received: Apr. 11, 2020
Accepted: --
Published Online: Dec. 2, 2020
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