Quantum-limited microwave parametric amplifiers are genuine key pillars for rising quantum
technologies and, in general, for applications that rely on the successful readout of weak …

Many important phenomena in quantum devices are dynamic, meaning that they cannot be
studied using time-averaged measurements alone. Experiments that measure such transient …

Squeezing of the electromagnetic vacuum is an essential metrological technique used to
reduce quantum noise in applications spanning gravitational wave detection, biological …

Degenerate parametric amplifiers (DPAs) exhibit the unique property of phase-sensitive
gain and can be used to noiselessly amplify small signals or squeeze field fluctuations …

Josephson meta-materials have recently emerged as very promising platform for
superconducting quantum science and technologies. Their distinguishing potential resides …

The field of propagating quantum microwaves is a relatively new area of research that is
receiving increased attention due to its promising technological applications, both in …

Entangled microwave photons form a fundamental resource for quantum information
processing and sensing with continuous variables. We use a low-loss Josephson …

Predicting the performance of traveling-wave parametric amplifiers (TWPAs) based on
nonlinear elements like superconducting Josephson junctions (JJs) is vital for qubit read-out …

Superconducting parametric amplifiers are crucial components in microwave quantum
circuits for enabling quantum-limited signal readout. The best-performing such amplifiers are …

The nonlinear response associated with the current dependence of the superconducting
kinetic inductance was studied in capacitively shunted NbTiN microstrip transmission lines. It …