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 …

We review the progress and main challenges in implementing large-scale quantum
computing by optical control of electron spins in quantum dots (QDs). Relevant systems …

Quantum computation requires a continuous supply of rapidly initialized qubits for quantum
error correction. Here, we demonstrate fast spin state initialization with near unity efficiency …

A single electron or hole spin trapped inside a semiconductor quantum dot forms the
foundation for many proposed quantum logic devices,,,,,. In group III–V materials, the …

Electron spin coherence has been generated optically in n-type modulation doped (In, Ga)
As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The …

A key ingredient for a quantum network is an interface between stationary quantum bits and
photons, which act as flying qubits for interactions and communication. Photonic crystal …

The spin interaction of a hole confined in a quantum dot with the surrounding nuclei is
described in terms of an effective magnetic field. We show that, in contrast to the Fermi …

Solid-state quantum dots are promising candidates for efficient light-matter interfaces
connecting internal spin degrees of freedom to the states of emitted photons. However …

Solotronics, optoelectronics based on solitary dopants, is an emerging field of research and
technology reaching the ultimate limit of miniaturization. It aims at exploiting quantum …

We analyze the optical emission of single II-VI quantum dots containing 0 or 1 magnetic
atom (manganese) and a controlled number of carriers (0,±1 electron). The emission of …