We demonstrate an efficient and continuous microwave photon-to-electron converter with
large quantum efficiency (83%) and low dark current. These unique properties are enabled …

The hierarchical equations of motion (HEOM) approach can describe the reduced dynamics
of a system simultaneously coupled to multiple bosonic and fermionic environments. The …

We propose and analyze a simple mesoscopic quantum heat engine that exhibits both high
power and high efficiency. The system consists of a biased Josephson junction coupled to …

The interaction strength of an oscillator to a qubit grows with the oscillator's vacuum field
fluctuations. The well-known degenerate parametric oscillator has revived interest in the …

We present a continuous microwave photon counter based on superconducting cavity-
coupled semiconductor quantum dots. The device utilizes photon-assisted tunneling in a …

Quantum dots are frequently used as charge-sensitive devices in low-temperature
experiments to probe electric charge in mesoscopic conductors where the current running …

We focus on a recently experimentally realized scenario of normal-metal–insulator–
superconductor tunnel junctions coupled to a superconducting resonator. We develop a first …

Squeezing of the quadratures of the electromagnetic field has been extensively studied in
optics and microwaves. However, previous works focused on the generation of squeezed …

The control of light-matter interaction at the most elementary level has become an important
resource for quantum technologies. Implementing such interfaces in the THz range remains …

Understanding the interaction between cavity photons and electronic nanocircuits is crucial
for the development of mesoscopic quantum electrodynamics (QED). One has to combine …