Moreover you can’t transfer information faster than the speed of light. As for QE: I first I need to send you a particle at sunlight speeds. Then I measure my

Moreover you can’t transfer information faster than the speed of light. As for QE: I first I need to send you a particle at sunlight speeds. Then I measure my particle and get the value N, which means I immediately know that your particle must be -N. Great for key exchange: I can send you let’s say 2048 of these particles and then we instantly know each other’s keys/have a shared key, while also knowing if the transmission has been tempered with in transit. But I can’t send you a message I choose.