  Developing a gate-tunable, scalable, and topologically-protectable
supercurrent qubit and integrating it into a quantum circuit are crucial for
applications in the fields of quantum information technology and topological
phenomena. Here we propose that the nano-hybrid supercurrent transistors, a
superconducting quantum analogue of a transistor, made of topological insulator
nanowire would be a promising platform for unprecedented control of both the
supercurrent magnitude and the current-phase relation by applying a voltage on
a gate electrode. We believe that our experimental design will help probing
Majorana state in topological insulator nanowire and establishing a solid-state
platform for topological supercurrent qubit.
