I want to understand QKD better and know about entangled photons.
In this clip, they explain QKD:
They explain that the photons always are correlated. If the photons have been eavesdropped, Alice and Bob have different keys received.
However, if Eve listens to the key and has a copy of Bob's receiver, could Eve listen to the conversation and detect the right key and modifies their own photons to send further to Bob without notice? Would QKD break down if you have the receiver box of Bob?