We perform polarization-resolved magneto-optical measurements on single InAsP quantum dots embedded in an InP nanowire. In order to determine all elements of the electron and hole g-factor tensors, we measure in magnetic fields with different orientations. The results of these measurements are in good agreement with a model based on exchange terms and Zeeman interaction. In our experiment, polarization analysis delivers a powerful tool that not only significantly increases the precision of the measurements, but also enables us to probe the exciton spin-state evolution in magnetic fields. We propose a disentangling scheme of heavy-hole exciton spins enabling a measurement of the electron spin T2-time.
|Number of pages||7|
|Journal||Physical Review B (Condensed Matter and Materials Physics)|
|Publication status||Published - 2011|
- CWTS 0.75 <= JFIS < 2.00
Witek, BJ., Heeres, RW., Perinetti, U., Bakkers, EPAM., Kouwenhoven, LP., & Zwiller, V. (2011). Measurement of the g-factor tensor in a quantum dot and disentanglement of excition spins. Physical Review B (Condensed Matter and Materials Physics), 84, 1-7.