0 Members and 1 Guest are viewing this topic.
1) What properties of an entangled pair of particles are correlated?Are both particles' spins always in the same direction? Always in the opposite direction? Are their momenta correlated? Their direction of motion through space? Anything else?
2) How do we know that a particular pair of particles are entangled with one-another?I've read that in order to prevent a violation of causality, information cannot be sent instantaneously via a pair of entangled particles. Apparently, if you try to send a signal to particle B by manipulating particle A's properties, the message that anyone looking at particle B will see will be random or garbled. If this is the case, how can we know that particles A and B are even entangled? In order for us to tell that they are entangled, we have to be able to measure that there is a correlation between the two particles' properties in the first place. If particle B's properties seem random when compared to particle A's when measured, then how can we know there is a correlation?
3) How does particle 'splitting' affect entanglement?If I have two photons A and B that are entangled, and I send A through an extremely powerful magnetic field so that it splits into two weaker photons A1 and A2, will both of these new photons be entangled with photon B? Will only A1 or A2 be entangled with B but not both A1 and A2? Will photon B split as well?
4) Can two dissimilar particles be entangled?Can a photon be entangled with an electron? Can a quark in a proton be entangled with a quark in a neutron?
I thought entanglement was a result of mutually exclusive quantum numbers. That could only apply to pairs (sets?) of identical particles because it would only be identical particles in a particular system which would have the same set of quantum numbers.Anyone put me right on this?