The mesoscopic spin system formed by the 10 4–10 6 nuclear spins in a semiconductor
quantum dot offers a unique setting for the study of many-body spin physics in the …

Epitaxial quantum dots formed by III–V compound semiconductors are excellent sources of
non-classical photons, creating single photons and entangled multi-photon states on …

Quantum entanglement is among the most fascinating aspects of quantum theory. Entangled
optical photons are now widely used for fundamental tests of quantum mechanics and …

Coherent excitation of an ensemble of quantum objects underpins quantum many-body
phenomena and offers the opportunity to realize a memory that stores quantum information …

A high-spin nucleus coupled to a color center can act as a long-lived memory qudit in a spin-
photon interface. The germanium vacancy (GeV) in diamond has attracted recent attention …

Control over quantum dynamics of open systems is one of the central challenges in quantum
science and engineering. Coherent optical techniques, such as coherent population …

The spin diffusion concept provides a classical description of a purely quantum-mechanical
evolution in inhomogeneously polarized many-body systems such as nuclear spin lattices …

A controlled quantum system can alter its environment by feedback, leading to reduced-
entropy states of the environment and to improved system coherence. Here, using a …

Quantum control of solid-state spin qubits typically involves pulses in the microwave domain,
drawing from the well-developed toolbox of magnetic resonance spectroscopy. Driving a …

We present a formalized perturbation theory for Markovian master equations in the language
of a generalized Schrieffer-Wolff (SW) transformation. A nonunitary rotation decouples the …