Figure 1
From: Enhancing robustness of noisy qutrit teleportation with Markovian memory
The diagram of the information transmission in the entanglement distribution. The green arrow represents the transmission of the first photon and the blue arrow describes the transmission of the second photon after the separation time \(\boldsymbol{\tau }_{s}\). The dotted line is the correlation of noise between two uses of the lossy channel which originates from the much higher rate of consecutive transmission making the local environment retains a memory. The whole transmission process is the entangled photonic state transmitted through lossy memory channel produces a two-photon state exhibiting the coherence and the part of classical correlation and then transmitting the two-photon state through private noiseless channel to the sender and receiver