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?



Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.