Fig. 2: The influence of purity of TMSS on the Gaussian EPR steering in a lossy channel.
From: Sudden death and revival of Gaussian Einstein–Podolsky–Rosen steering in noisy channels
a Steering parameter quantified by Eq. (4). b Steering certification according to Eq. (5). The region under the bound of 1 (black dotted line) indicates the existence of steerability. Theoretical results for different purities of 1, 0.8, 0.6, 0.4, and 0.2 are considered, which correspond to different δ of 0, 0.5, 1.33, 2.99, and 7.97, respectively. The experimental data (black circles and squares) for the pure TMSS agree well with the theoretical prediction (black solid and dash curves). Error bars of experimental data represent ±1 standard deviation.
