Superconducting signal amplifier

A system, comprising:

• a superconducting subcircuit that includes a plurality of superconducting wires connected in parallel with one another, the superconducting subcircuit including:
• a first superconducting wire having a first impedance while the first superconducting wire is in a non-superconducting state;
• and
• a second superconducting wire having a second impedance while the second superconducting wire is in a non-superconducting state, the second impedance being greater than the first impedance;
• and
• a third superconducting wire having a third impedance while the third superconducting wire is in a non-superconducting state, the third impedance being greater than each of the first impedance and the second impedance;
• and
• one or more current sources coupled to the superconducting subcircuit and configured to supply a first current in response to one or more trigger events;
• wherein the plurality of superconducting wires are configured to operate in a superconducting state in the absence of the first current;
• the first superconducting wire is configured to transition to a non-superconducting state in response to the first current;
• the second superconducting wire is configured to transition to a non-superconducting state in response to the first superconducting wire transitioning to the non-superconducting state;
• and
• the third superconducting wire is configured to transition to the non-superconducting state in response to the second superconducting wire transitioning to the non-superconducting state.