E ora quello a cui allude Mizazrino, più nel dettaglio:
"here's the basic idea of how entanglement works. We generate a pair of particles in a very special state, which we call an entangled state. If we measure the spins of these particles along the same axis, whichever axis it is, the two answers we get will always be opposites. However, there's no way to predict the result for either particle individually, and if we measure them on different axes there's no correlation between the results.
So now we take these particles and separate them, so that each of us takes one and travels far away, however far we want. Then, each us measures our particle at the same time, on some axis that we decided on earlier and we still get opposite values. Since the values weren't determined until we measured them, it would seem the only way we could end up with opposite values is if the particles communicated with each other somehow.
We'd like to use this phenomenon to transmit information between each other, but how? The only productive way we can interact with the system is by measuring it, so maybe I could send a bit by either measuring my particle or not, and you could tell which I'd done based on the state of your bit. If I don't measure it, then when you measure your particle you'll have a 50/50 chance of getting either possible result. If I do measure it you'll definitely get the result I didn't get. But, crucially, you don't know what result I got. So from what you know, you still have a 50/50 chance of getting either possible state. There is no way, in fact, to tell whether or not I measured my particle by performing measurements on yours.
So not only is not possible to send information faster than light using entanglement, it's impossible to send any information at all using entanglement at all."
Limiti intrinseci quantistici
E allora mi chiedo: ma se invece di andare a verificare lo spin di una particella, si sfruttano le variazioni di proprietà di una gran quantità di particelle quantizzate?
Cioè si sfrutta la loro interazione con l'ambiente circostante, che dovrebbe variare al variare delle proprietà delle particelle?