Air-gap shunt capacitors tune Josephson TWPA impedance without lossy dielectrics, cutting signal absorption and noise in qubit readout.
Air-gap shunt capacitors replace lossy dielectrics in a Josephson TWPA, cutting noise and signal absorption for cleaner qubit readout.
A resonator and inverse diplexer tune and split JTWPA signal and idler frequencies for quantum applications without added noise.
Discrete pump coupling along a nonlinear transmission line compensates phase mismatch, avoiding stopbands while preserving broad-band gain.
A dual-resonator JTWPA phase-matches pump, signal, and idler tones while suppressing higher-harmonic pump depletion to preserve gain and SFDR.
Impedance matching and Josephson junction nonlinearity help this amplifier deliver high gain, broad bandwidth, and low noise.
Impedance matching and Josephson-junction inductive paths help a parametric amplifier deliver broad bandwidth, high gain, and low noise.