Braiding Operations for a Topological Josephson Junction Array Using a Bipolar Current Pulse Generator Controlled by SFQ Logic Circuits

Majorana bound states can occur in a topological Josephson junction (JJ) array in the presence of a fractal vortex with 2
$\pi$
-phase winding. The braiding operation was theoretically demonstrated using current pulses, compatible with the single flux quantum (SFQ) technology. Herein, we designed an SFQ logic circuit for braiding operations of a topological JJ array using single flux quanta. Braiding operations could be realized using a bipolar current pulse generator controlled by an SFQ logic circuit.