Relationships between E91 and the purified BB84 QKD protocols

Relationships between E91 and the purified BB84 QKD protocols Ask Question Asked today Modified today Viewed 7 times 0 Peter Shor and John Preskill made a simple proof a the BB84 security by purifying the protocol, which then comes to share an entangled state, prepared by a third party, between Alice and Bob. This looks quite similar to the entangled based protocol E91. Is it correct to say that BB84's purification is equivalent to the E91 ? qkd Share Improve this question Follow asked 3 hours ago deb2014 5492 2 silver badges 8 8 bronze badges Add a comment Know someone who can answer? Share a link to this question via email, Twitter, or Facebook. Your Answer Sign up or log in Sign up using Google Sign up using Email and Password Post as a guest Name Email Required, but never shown Post Your Answer By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy. Start asking to get answers Find the answer to your question by asking. 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