Anonymous transmission in a noisy quantum network using the W state: Difference between revisions

Anonymous transmission in a noisy quantum network using the W state (edit)

1,227 bytes added , 12 November 2021

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 ==Protocol Description==
 <!-- Mathematical step-wise protocol algorithm helpful to write a subroutine. -->
+; Collision detection
+: Nodes run the classical collision detection protocol [9] to determine a single sender <math>S</math>.  All nodes input 1 if they do wish to be the sender and 0 otherwise.  If a single node wants to be the sender, continue.
+; Receiver notification
+: Nodes run the classical receiver notification protocol [9], where the receiver <math>R</math> is notified of her role.
+; State distribution
+: A trusted source distributes the <math>N</math>-partite <math>W</math> state.
+; Measurement
+: All nodes except for <math>S</math> and <math>R</math> measure in the {|0〉,|1〉} basis.
+; Anonymous announcement of outcomes
+: Nodes use the classical veto protocol [9] which outputs 0 if all the <math>N-2</math> measurement outcomes are 0, and 1 otherwise. If the output is 0 then anonymous entanglement is established, else abort.
+; Teleportation
+: Sender <math>S</math> teleports the message state |ψ〉 to the receiver <math>R</math>. Classical messagemassociated with teleportationis sent anonymously. The communication is carried outusing the classical logical OR protocol [9] which computes <math>m \oplus rand</math>, where <math>rand</math> is a random 2-bit string input by the receiver <math>R</math>.
 ==Further Information==