I was trying to learn quantum memory and went through some papers, websites, etc.
The current understanding I have (which I'm not sure is right) is this: Two photons are prepared together which are said to be entangled, one of the photons will interact with an atom and the state of the atom changes according to the what state the photon was in (hence, storing the memory?)
Is that correct? If not, where did I go wrong? and what is correct?