From Random Telegraph to Gaussian Stochastic Noises: Decoherence and Spectral Diffusion in a Semiconductor Quantum Dot

Figure 1

Frequency fluctuation of the QD emission line as a function of time in the presence of a single random telegraph. Ω is the Stark shift of the QD line due to the electric field created by the charge carrier in the defect located in the QD vicinity. 𝜏_↓ and 𝜏_↑ are the characteristic time constants of the jump processes.