Patent ID: 11955934
Assignee: SEEQC, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 5:
6. A tunable superconducting microwave device, comprising:
at least one inductive structure having an inductance, and comprising:
a plurality of symmetric radio frequency superconducting quantum interference devices (rf-SQUIDs), each symmetric rf-SQUID comprising two identical shunted rf-SQUIDs, with two coupling loops, and each rf-SQUID comprising at least one Josephson junction and at least one inductive loop and performing nonlinear mixing;
the inductance being dependent on an amplitude of a microwave signal current in the inductive structure, and having a value according to a nonlinear function of order at least two of the amplitude of a microwave signal current in the respective inductive structure; and
a control port configured to receive a plurality of control signals selectively coupling magnetic flux into the at least one inductive loop of each rf-SQUID, to thereby alter the inductance of the inductive structure,

wherein the at least one inductive structure comprises a plurality of inductive structures forming a traveling-wave parametric amplifier having a gain and bandwidth distinctly tunable by the magnetic flux coupled into each inductive loop based on the plurality of control signals.