<p>A quantum computing structure comprising a superconducting phase-charge qubit, wherein the superconducting phase-charge qubit comprises a superconducitng loop with at least one Josephson junction. The quantum computing structure also comprises a first mechanism for controlling a charge of the superconducting phase-charge qubit and a second mechanism for detecting a charge of the superconducting phase-charge qubit, wherein the first mechanism and the second mechanism are each capacitively connected to the superconducting phase-charge qubit.</p>
