Thanks, that seems to make more sense.
I was reading awhile ago about experiments in quantum comunication using photons. Aparently these comms could be 'undecipherable' to unwanted eavesdroppers. I think they've only managed it over small distances because they are sending and receiving through an atmosphere, but considering what you said about the photon's stability, you could communicate all over the galaxy with this method. Pretty cool stuff.
Someone should tell SETI!
