  A hybrid setup consisting of a superconductivity-proximitized quantum spin
Hall (QSH) insulator and a quantum anomalous Hall (QAH) insulator is proposed
for chiral injection of electrons into the Majorana bound state (MBS). An
unexplored region of the phase space involving the exchange field induced boost
of the helical edge state is then proposed for the detection of the MBS. 2-D
transport simulations of our proposed setup is compared with the corresponding
setup in the absence of the QAH region, when moderate disorder and a small but
finite bulk out-of-plane magnetic field and a Rashba field are included. The
remarkable contrast between the two results demonstrates the possibility for an
unprecedented immunity from disorder-induced masking of the MBS detection in
our proposed setup.
