Khaled Karrai

TL;DR: In this article, a lock-in technique on the electron spin resonance frequency of a single nitrogen-vacancy defect placed at the apex of an atomic force microscope tip was used to demonstrate quantitative magnetic field mapping with nanoscale resolution.

TL;DR: The nonlinear dynamics of an optomechanical system consisting of an illuminated Fabry-Perot cavity, one of whose end mirrors is attached to a vibrating cantilever, is explored and a theory is presented that yields quantitative agreement with experimental results.

TL;DR: In this article, the fundamental limits of the use of quartz tuning forks as force detectors in scanned probe microscopy were explored, and it was demonstrated that at room temperature, pressure, and atmosphere these force sensors have a noise floor of 0.62 pN/Hz and exhibit a root mean square Brownian motion of only 0.32 pm.

TL;DR: Experiments that access the nonlinear Fano regime by using semiconductor quantum dots, which allow both the continuum states to be engineered and the energies to be rescaled to the near infrared, and a nonlinear theory applicable to solid-state systems with fast relaxation of carriers are reported.

TL;DR: In this paper, the fine structure of the neutral exciton in a single self-assembled InGaAs quantum dot is investigated under the effect of an applied uniaxial stress, and it is shown that using this stretching technique, the quantum dot potential is elastically deformable such that the exciton fine structure splitting can be substantially reduced.