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3. Problem 3 Suppose there are 7 nodes as show above and they share 7 entangled qubits pairs as indicated. 1. Node A and C
3. Problem 3 Suppose there are 7 nodes as show above and they share 7 entangled qubits pairs as indicated. 1. Node A and C wants to communicate securely. For that they first need to determine keys using BB84 or Ekert protocol. For that to happen, how many classical bits need to be communicated in the network? Hint: Think about teleportation protocol and entanglement swapping. 2. Same question as above if the entangled pair between nodes B and G decoheres? 3. Problem 3 Suppose there are 7 nodes as show above and they share 7 entangled qubits pairs as indicated. 1. Node A and C wants to communicate securely. For that they first need to determine keys using BB84 or Ekert protocol. For that to happen, how many classical bits need to be communicated in the network? Hint: Think about teleportation protocol and entanglement swapping. 2. Same question as above if the entangled pair between nodes B and G decoheres
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