Schematic illustration of the heterodyne-detected photon echoes in reflection geometry. BS and PD denote the beam splitter and photodiode, respectively.
In the paper, co-authored by Tomasz Wojtowicz, group leader at MagTop, the authors have analyzed two-dimensional Fourier spectra for resonant optical excitation of resident electrons to localized trions or donor-bound excitons in semiconductor nanostructures subject to a transverse magnetic field.
Phys. Rev. X 7, 031030 (2017), arXiv:1701.01826 (2017)