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

Claim 0:
1. A traveling-wave parametric amplifier, comprising:
an input port configured to receive a microwave signal;
a plurality of successive microwave amplifier stages configured to form a microwave transmission line, each microwave amplifier stage comprising a serial inductor comprising a symmetric rf-SQUID comprising two identical shunted rf-SQUIDs with two coupling loops, each rf-SQUID comprising at least one Josephson junction, and a shunt capacitor, an inductance of the serial inductor of each microwave amplifier stage being a nonlinear function of a total signal in the serial inductor;
at least two control ports, each being configured to accept a respective control signal, to modulate the inductance of the serial inductor of each microwave amplifier stage, wherein respective control signals are configured to distinctly control at least two orders of nonlinearity of the plurality of successive microwave amplifier stages; and
an output port, configured to present an amplified representation of the received microwave signal.