An entanglement can swap or a bipartite entanglement can enter into an entanglement with another state. So the entangled state c(|+>_1|->_2 + |->_1|+>_2) can couple with the system in a superposition c(|←> + |→>) to become, depending upon the interaction and conservation principles etc to be
c(|+>_1|->_2 + |->_1|+>_2) + c(|←> + |→>) → b(|+>_1|←> + |->_1|→>) + d(|->_2 + |+>_2) which would be an entanglement swap. It might however form a tripartite entanglement c(|+>_1|->_2 + |->_1|+>_2) + c(|←> + |→>) → b(|+>_1|->_2|←> + |->_1|+>_2|→>) + c(|->_1|+>_2|←> + |+>_1|->_2|→>). Here normalization factors can be easily calculated. For the first to happen there is a Hadamard gate on the two initial states. For the second there are CNOT type operations that creates an entanglement. CNOT gates demolish or generate entanglements. LC On Wednesday, March 13, 2019 at 12:25:43 AM UTC-6, Pierz wrote: > > A question for the physicists. I understand that entanglement is > monogamous, which is really just a way of saying that a system's > correlations with other systems cannot exceed +-1. Thus a maximally > entangled system has no room for entanglement with any other system. The > question is what happens to previous entanglements when a particle > interacts with another particle, such that it becomes maximally entangled > with it. Are prior entanglements completely obliterated, or are they just > obliterated FAPP, meaning that maximal entanglement is also only FAPP? ISTM > that some remote trace of entanglement - a kind of micro-entanglement - > must remain? > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
