Fig. 4: Average teleportation fidelity.
From: Telecom-wavelength quantum teleportation using frequency-converted photons from remote quantum dots
The average fidelity over all three performed teleportation experiments \(\bar{f}=({f}^{\left\vert H\right\rangle \to \left\vert H\right\rangle }+{f}^{\left\vert D\right\rangle \to \left\vert D\right\rangle }+{f}^{\left\vert R\right\rangle \to \left\vert R\right\rangle })/3\), heralded by Bell state \({\left\vert {\Psi }^{-}\right\rangle }_{1,2}\) is shown. Red solid dots represent the measured results with error bars corresponding to one standard deviation. The red shaded area shows the theoretically modeled data, and the gray solid line symbolizes the classical threshold of 2/3. The uncertainty in the theoretical model arises from some parameters that cannot be precisely determined in our experimental setting. Therefore, they were based on literature74 estimated within the following intervals to account for their variability: polarization mode overlap \({M}_{p}=\left[0.8,0.9\right]\), cross-dephasing time \({\tau }_{HV}=\left[1,10\right]\,{{\rm{ns}}}\), spin scattering time \({\tau }_{ss}=\left[1,10\right]\,{{\rm{ns}}}\). The other parameters are assumed as: dephasing time T2 = 35 ps and exciton decay time τX = 171 ps.
