The authors review the nonlinear optical properties of semiconductor quantum wells that are
grown inside high-Q Bragg-mirror microcavities. Light-matter coupling in this system is …

Hydrogen sensors and hydrogen-activated switches were fabricated from arrays of
mesoscopic palladium wires. These palladium “mesowire” arrays were prepared by …

The fine structure of excitons is studied by magnetophotoluminescence spectroscopy of
single self-assembled In (Ga) As/(Al) GaAs quantum dots. Both strength and orientation of …

The basics of four-wave mixing (FWM) and recent advances in FWM microscopy are
reviewed with a particular emphasis on applications in the field of nanomaterials. The vast …

Transient nonlinear optical spectroscopy, performed on excitons confined to single GaAs
quantum dots, shows oscillations that are analogous to Rabi oscillations in two-level atomic …

Picosecond optical excitation was used to coherently control the excitation in a single
quantum dot on a time scale that is short compared with the time scale for loss of quantum …

The pure dephasing of the optical polarization and the corresponding line shape of
absorption spectra in small quantum dots due to the interaction of the exciton both with …

S emiconductors are ubiquitous in device electronics because their charge distributions are
easily shaped and controlled to make logic gates. Since gate switching and …

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 …

We report on the coherent optical excitation of electron spin polarization in the ground state
of charged GaAs quantum dots via an intermediate charged exciton (trion) state. Coherent …