There is described a method for performing a two-qubit gate. The method comprises coupling a first qubit to a second qubit, and coupling a third qubit to the first qubit and to the second qubit, wherein the third qubit is a coupler. A drive signal is applied to the coupler to perform the two-qubit gate on the first qubit and the second qubit by driving the coupler, the drive signal creating coupling between eigenstates of a Hamiltonian of the coupler.