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

We propose a phase-biased non-Hermitian Josephson junction (NHJJ) composed of two
superconductors mediated by a short non-Hermitian link. Such a NHJJ is described by an …

Half a century after its discovery, the Josephson junction has become the most important
nonlinear quantum electronic component at our disposal. It has helped reshape the …

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

We show experimentally that a dc-biased Josephson junction in series with two microwave
resonators emits entangled beams of microwaves leaking out of the resonators. In the …

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 …

The Josephson junction is a building block of quantum circuits. Its behavior, well understood
when treated as an isolated entity, is strongly affected by coupling to an electromagnetic …

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 theoretically study a quantum destructive interference (QDI)-induced photon blockade in
a two-qubit driven cavity quantum electrodynamics system with dipole–dipole interaction …

We demonstrate an on-demand source of microwave single photons with 71–99% intrinsic
quantum efficiency. The source is narrowband (300 kHz) and tuneable over a 600 MHz …