Superconducting signal amplifier

A method, comprising:

• providing an amplification current to a first circuit that includes a plurality of superconducting wires connected in parallel with one another;
• while the plurality of superconducting wires is operating in a superconducting state, supplying an additional current to a first superconducting wire of the plurality of superconducting wires so that current supplied to the first superconducting wire exceeds a first threshold superconducting current of the first superconducting wire;
• in response to supplying the additional current to the first superconducting wire, transitioning the first superconducting wire from the superconducting state to a non-superconducting state;
• subsequent the transition of the first superconducting wire from the superconducting state to the non-superconducting state:
• transitioning the remainder of the superconducting wires of the plurality of superconducting wires from the superconducting state to the non-superconducting state;
• and
• directing the amplification current to a second circuit that is connected in parallel to the first circuit.

An electronic device, comprising:

• a plurality of superconducting wires connected in parallel with one another, the plurality of superconducting wires including:
• a first superconducting wire having a first threshold superconducting current;
• and
• a second superconducting wire having a second threshold superconducting current that is greater than the first threshold superconducting current;
• wherein:
• the first superconducting wire has a first length;
• and
• a constriction is defined on the first superconducting wire so that the constriction narrows a width of the first superconducting wire for a portion of the first length.

An electronic device, comprising:

• a plurality of superconducting wires connected in parallel with one another, the plurality of superconducting wires including:
• a first superconducting wire having a first threshold superconducting current;
• and
• a second superconducting wire having a second threshold superconducting current that is greater than the first threshold superconducting current;
• wherein the first superconducting wire is positioned so as to be capacitively-coupled to the second superconducting wire.

An electronic device, comprising:

• a plurality of superconducting wires connected in parallel with one another, the plurality of superconducting wires including:
• a first superconducting wire having a first threshold superconducting current;
• and
• a second superconducting wire having a second threshold superconducting current that is greater than the first threshold superconducting current;
• wherein the first superconducting wire is thermally-coupled to the second superconducting wire.