Fig. 4: Results for the effect of purity of the TMSS on EPR steering in a noisy channel.
From: Sudden death and revival of Gaussian Einstein–Podolsky–Rosen steering in noisy channels
a, b The dependence of Gaussian EPR steering on transmission efficiency and excess noise with initial pure and impure (purity is 0.8) TMSS, respectively. The steerabilities of \({{\mathcal{G}}}^{A\to {B}_{N}}\) and \({{\mathcal{G}}}^{{B}_{N}\to A}\) are given by the light red and blue colors, respectively. c The effect of noise on EPR steering of the TMSS with purities of 1 (blue curves) and 0.8 (red curves), respectively. The excess noise is taken as two times of vacuum noise.
