A quantum processing apparatus comprises control electronics, a switching unit, a bias line, and N electronic circuits. Both the switching unit and the bias line are connected to the control electronics. The N circuits comprise N respective, non-volatilely tunable resistors and N respective frequency-tunable, solid-state qubits. The control electronics are configured to individually tune the resistors via the switching unit, in a configuration mode of the apparatus; and apply a voltage bias to the electronic circuits via the bias line, in an operation mode of the apparatus. The electronic circuits are configured to passively apply respective bias signals to the qubits, wherein such bias signals are impacted by the resistors, in response to the voltage bias applied via the bias line, to operate the qubits at respective frequencies determined according to the respective bias signals.