Entanglement swapping
Can two parties share entanglement without ever interacting with each other? In this video Gustavo Amaral (QuTech) will answer this question and take you through the steps of the entanglement swapping protocol.
Prerequisite knowledge
Further thinking
In entanglement swapping, in order for Alice and Bob to obtain some specific, final Bell state (such as |Φ>+), does it matter which of them applies local operations based on Carol’s results?
Further reading
For further information on the current applications of entanglement swapping to communications see https://spectrum.ieee.org/telecom/security/two-steps-closer-to-a-quantum-internet.