  Quantum computation is a promising emerging technology, and by utilizing the
principles of quantum mechanics, it is expected to achieve faster computations
than classical computers for specific problems. There are two distinct
architectures for quantum computation: gate-based quantum computers and quantum
annealing. In gate-based quantum computation, we implement a sequence of
quantum gates that manipulate qubits. This approach allows us to perform
universal quantum computation, yet they pose significant experimental
challenges for large-scale integration. On the other hand, with quantum
annealing, the solution of the optimization problem can be obtained by
preparing the ground state. Conventional quantum annealing devices with
transverse-field Ising Hamiltonian, such as those manufactured by D-Wave Inc.,
achieving around 5000 qubits, are relatively more amenable to large-scale
integration but are limited to specific computations. In this paper, we present
a practical method for implementing universal quantum computation within the
conventional quantum annealing architecture using the transverse-field Ising
Hamiltonian. Our innovative approach relies on an adiabatic transformation of
the Hamiltonian, changing from transverse fields to a ferromagnetic interaction
regime, where the ground states become degenerate. Notably, our proposal is
compatible with D-Wave devices, opening up possibilities for realizing
large-scale gate-based quantum computers. This research bridges the gap between
conventional quantum annealing and gate-based quantum computation, offering a
promising path toward the development of scalable quantum computing platforms.
