I am having a hard time understanding why MDI-QKD is truly measurement device independent. My current vision is that Charlie (the one who performs the Bell state measurements) is simply sampling the qubits Alice and Bob sent: the ones for which the measurement does not fail should have certain correlations.

But why is this schema imune against all detector side channels?

  • $\begingroup$ This might be of interest also for the quantum computing Stack Exchange $\endgroup$
    – Mauricio
    Nov 25 at 18:40
  • $\begingroup$ Can I repost it there? $\endgroup$ Nov 25 at 19:03
  • $\begingroup$ Sure, just say that you reposted it and put a link to this one. $\endgroup$
    – Mauricio
    Nov 25 at 19:07
  • $\begingroup$ I'd suggest a search on Cryptography. $\endgroup$
    – StephenG
    Nov 25 at 22:39

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