In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

Superconducting electronic devices have reemerged as contenders for both classical and
quantum computing due to their fast operation speeds, low dissipation, and long coherence …

Frequency combs, specialized laser sources emitting multiple equidistant frequency lines,
have revolutionized science and technology with unprecedented precision and versatility …

We propose an experimentally feasible scheme for generating antibunched N-photon
bundles by a dc voltage-biased Josephson junction in series with a superconducting …

The scaling up of quantum computers operating in the microwave domain requires
advanced control electronics, and the use of integrated components that operate at the …

We show that a properly dc-biased Josephson junction in series with two microwave
resonators of different frequencies emits photon pairs in the resonators. By measuring auto …

Spin currents are key to spin torque devices, but determining the proper spin current is
nontrivial. Here we derive a general quantum-mechanical formula for the intrinsic proper …

We propose a scheme involving a Cooper pair transistor (CPT) embedded in a
superconducting microwave cavity, where the CPT serves as a charge tunable quantum …

We show experimentally that a dc biased Josephson junction in series with a high-enough-
impedance microwave resonator emits antibunched photons. Our resonator is made of a …

We provide a unified semiclassical theory for the conserved current of nonconserved
quantities, and manifest it in two physical contexts: the spin current of Bloch electrons and …