  The idea of topological quantum computation is to build powerful and robust
quantum computers with certain macroscopic quantum states of matter called
topologically ordered states. These systems have degenerate ground states that
can be used as robust "topological qubits" to store and process quantum
information. However, a topological qubit has not been realized since the
proposed systems either require sophisticated topologically ordered states that
are not available yet, or require complicated geometries that are too difficult
to realize. In this paper, we propose a new experimental setup which can
realize topological qubits in a simple bilayer fractional quantum Hall (FQH)
system with proper electric gate configurations. Compared to previous works,
our proposal is accessible with current experimental techniques and only
involves well-established topological states. Our system can realize a large
class of topological qubits, generalizing the Majorana zero modes studied in
the recent literature to more computationally powerful possibilities. We
propose three tunneling and interferometry experiments to detect the existence
and non-local topological properties of the topological qubits.
