Dispersion-engineered traveling wave kinetic inductance parametric amplifier
AssigneeCalifornia Institute of Technology
InventorsJonas Zmuidzinas, Peter K. Day
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Abstract
A traveling wave kinetic inductance parametric amplifier comprises a superconducting transmission line and a dispersion control element. The transmission line can include periodic variations of its dimension along its length. The superconducting material can include a high normal state resistivity material. In some instances the high normal state resistivity material includes nitrogen and a metal selected from the group consisting of titanium, niobium and vanadium. The traveling wave kinetic inductance parametric amplifier is expected to exhibit a noise temperature below 100 mK/GHz.
Claims12
A traveling wave kinetic inductance parametric amplifier, comprising:
- a transmission line having at least one data signal input port, having at least one pump signal input port and having at least one data signal output port, said transmission line configured to provide a nonlinear interaction between a pump signal and a data signal that are present simultaneously in said transmission line, said transmission line comprises a superconducting material having a high kinetic inductance, and configured to provide superconducting behavior below a critical temperature and a critical current density;
- and
- a dispersion control element coupled to said transmission line and configured to control a dispersion relation of waves propagating on the transmission line, the combination of said transmission line and said dispersion control element providing the traveling wave kinetic inductance parametric amplifier.
Dependencies are inferred from the claim text.