Applications
Kinetic inductance in superconductors is exploited to make efficient microwave delay lines as it increases the inductance per unit length of superconducting transmission lines.
Kinetic inductance can be used to make sensitive photon detectors, known as kinetic inductance detectors (KIDs), as the change in the Cooper pair density brought about by the absorption of a photon in a strip of superconducting material produces a measurable change in kinetic inductance.
Kinetic inductance is also used in a design parameter for superconducting flux qubits: is the ratio of the kinetic inductance of the Josephson junctions in the qubit to the geometrical inductance of the flux qubit. A design with a low beta behaves more like a simple inductive loop, while a design with a high beta is dominated by the Josephson junctions and has more hysteretic behavior.
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