Khaled Karrai

TL;DR: In this paper, a slip-stick positioning system is shown to work as a step-by-step scanning device, which simplifies the scanning confocal microscope since the long-range positioning unit and the scanning unit merge into only one unit that can do both.

TL;DR: A novel spectroscopy protocol based on optimal control of a single quantum system allows quantitative imaging of a strongly inhomogeneous field in a single scan without closed-loop control, which has previously been necessary to achieve this goal.

TL;DR: In this article, a single InGaAs∕GaAs self-assembled quantum dot embedded in a field effect structure is shown to be strongly inhibited by spin (Pauli) blockade of the optical transition.

TL;DR: In this paper, a novel method for opto-mechanical cooling of subwavelength-sized nanomechanical resonators is presented, in which the nanoresonator acts as a position-dependent perturbation by scattering.

TL;DR: In this paper, temperature-dependent photoluminescence on neutral and charged excitons in individual InAs quantum dots was investigated and the authors found narrow emission lines for temperatures up to 30 K for exciton transitions where only the electron ground state is occupied.