Simple proof of equivalence between adiabatic quantum computation and the circuit model

Abstract

We prove the equivalence between adiabatic quantum computation and quantum computation in the circuit model. An explicit adiabatic computation procedure is given that generates a ground state from which the answer can be extracted. The amount of time needed is evaluated by computing the gap. We show that the procedure is computationally efficient.

5 pages, 2 figures. v2: improved gap estimates and added some more details