Resonant LC power network for superconducting digital circuits

A method for fabricating a superconducting circuit, the method comprising:

• forming, in first layers of a fabrication stack, a resonator, wherein the resonator comprises:
• an inductor comprising a first terminal and a second terminal;
• and
• a capacitor comprising a first terminal electrically coupled to the second terminal of the inductor;
• and
• forming, in second layers of the fabrication stack, a Josephson junction, wherein the Josephson junction comprises a first terminal electrically coupled to a second terminal of the capacitor and a second terminal electrically coupled to the common node, wherein the terminal shared by the inductor and the capacitor is configured to be electrically coupled to an alternating current (AC) voltage source having a particular frequency and particular phase,
• wherein an inductance of the inductor and a capacitance of the capacitor are selected to cause the resonator to resonate at a frequency and a phase that substantially match the particular frequency and the particular phase, respectively, of the AC voltage source to facilitate switching a state of the Josephson junction via a single flux quantum (SFQ) pulse.

A device comprising a superconducting circuit, wherein the superconducting circuit comprises:

• a resonator that comprises:
• an inductor comprising a first terminal and a second terminal;
• and
• a capacitor comprising a first terminal electrically coupled to the second terminal of the inductor;
• and
• a Josephson junction comprising a first terminal electrically coupled to a second terminal of the capacitor and a second terminal electrically coupled to the common node, wherein the terminal shared by the inductor and the capacitor is configured to be electrically coupled to an alternating current (AC) voltage source having a particular frequency and particular phase,
• wherein an inductance of the inductor and a capacitance of the capacitor are selected to cause the resonator to resonate at a frequency and a phase that substantially match the particular frequency and the particular phase, respectively, of the AC voltage source to facilitate switching a state of the Josephson junction via a single flux quantum (SFQ) pulse.