Figure 1
From: Simplified entanglement swapping protocol for the quantum Internet
Sketch of the entanglement swapping protocol composed of three well-defined sectors: two independent EPR sources of the \(\left| {\beta_{00} } \right\rangle\)-type, one quantum repeater between both sources, and the density matrix of the final state \(\rho_{{\left| {\beta_{00} } \right\rangle }}\), where a gray element represents a value of 0.5, while a white element is equal to a value of 0.
