Quantum computers with Kerr-nonlinear parametric oscillators (KPOs) have recently been
proposed by the author and others. Quantum computation using KPOs is based on quantum …

The aim of this review is to provide quantum engineers with an introductory guide to the
central concepts and challenges in the rapidly accelerating field of superconducting …

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

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 …

Critical quantum systems are a promising resource for quantum metrology applications, due
to the diverging susceptibility developed in proximity of phase transitions. Here, we assess …

Single-mode Josephson-junction-based parametric amplifiers are often modeled as perfect
amplifiers and squeezers. We show that in practice, the gain, quantum efficiency, and output …

We propose and demonstrate a read-out technique for a superconducting qubit by
dispersively coupling it with a Josephson parametric oscillator. We employ a tunable quarter …

We study microwave response of a Josephson parametric oscillator consisting of a
superconducting transmission-line resonator with an embedded DC-superconducting …

The parametric phase-locked oscillator (PPLO) is a class of frequency-conversion device,
originally based on a nonlinear element such as a ferrite ring, that served as a fundamental …

The experimental non-observation of charge-parity (CP) symmetry violation in quantum
chromodynamics is commonly referred to as the strong CP problem. The axion, a …