The spin degree of freedom of an electron or a nucleus is one of the most basic properties of
nature and functions as an excellent qubit, as it provides a natural two-level system that is …

Light–matter interactions at the single-particle level have generally been explored in the
context of atomic, molecular and optical physics. Recent advances motivated by quantum …

Many important phenomena in quantum devices are dynamic, meaning that they cannot be
studied using time-averaged measurements alone. Experiments that measure such transient …

Describing a quantum impurity coupled to one or more noninteracting fermionic reservoirs is
a paradigmatic problem in quantum many-body physics. While historically the focus has …

Electrons on helium form a unique two-dimensional system on the interface of liquid helium
and vacuum. A small number of trapped electrons on helium exhibits strong interactions in …

Abstract 2D materials are a family of layered materials exhibiting rich exotic phenomena,
such as valley‐contrasting physics. Down to single‐particle level, unraveling fundamental …

Circuit QED techniques have been instrumental in manipulating and probing with exquisite
sensitivity the quantum state of superconducting quantum bits coupled to microwave …

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 …

The Kondo effect, deriving from a local magnetic impurity mediating electron-electron
interactions, constitutes a flourishing basis for understanding a large variety of intricate many …

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 …