The detection of microwave fields at single-photon power levels is a much-sought-after
technology, with practical applications in nanoelectronics and quantum information science …

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

A quantum theory of the mesoscopic LC-circuit based on the product-like fractal measure
which was introduced by Li and Ostoja-Starzewski is proposed. On the basis of the theory …

We present a fishbone-like lumped-element artificial transmission line to overcome
impedance mismatch in a reflection-type Josephson parametric amplifier between a …

Quantum correlations are a vital resource in advanced information processing based on
quantum phenomena. Remarkably, the vacuum state of a quantum field may act as a key …

The rapid progress towards scalable quantum processors demands amplifiers with large
bandwidths and high saturation powers. For this purpose, we present a broadband flux …

Low-noise amplifiers are of great significance in the field of quantum technologies. We study
a thermally driven parametric amplifier based on a superconductor-insulator-graphene …

The ubiquitous presence of shot noise sets a fundamental limit to the measurement
precision in classical metrology. Recent advances in quantum devices and novel quantum …

Josephson element-based parametric amplifiers (JPAs) typically require rf pump power that
is several orders of magnitude stronger than the maximum signal power they can handle …

Low-noise amplifiers are of great importance in the field of quantum technologies. We study
a thermally driven parametric amplifier based on a superconductor-insulator-graphene …