Quantum sensing, built upon fundamental quantum phenomena like entanglement and
squeezing, is revolutionizing precision and sensitivity across diverse domains, including …

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 …

Squeezed states of light have been used extensively to increase the precision of
measurements, from the detection of gravitational waves to the search for dark matter. In the …

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

When strongly pumped at twice their resonant frequency, nonlinear resonators develop a
high-amplitude intracavity field, a phenomenon known as parametric self-oscillations. The …

One of the cornerstones of quantum communication is the unconditionally secure
distribution of classical keys between remote parties. This key feature of quantum …

The recently proposed Josephson traveling-wave parametric amplifier (JTWPA) based on a
ladder transmission line consisting of radio-frequency superconducting quantum …

Quantum transduction is an important building block for quantum networking. Although
various platforms have been proposed, the efficiency of state-of-the-art systems is still way …

By strongly driving a transmon-resonator system, the transmon qubit may eventually escape
from its cosine-shaped potential. This process is called transmon ionization (TI) and known …