i am new to all this, but i have a confusion.
let us assume(quantum mechanically) there are two particles each having the same state, composed from the superposition of two independent states. these particles were initially together and later taken apart. (i am trying to use the concept of entanglement here). now if i effect the state of one particle, the other particle will also get affected in the same manner even if nothing is acting upon it, no matter what the distance between them. doesn't this mean that entanglement is faster than light in a sense? or am i wrong in my basics itself?

Question

i am new to all this, but i have a confusion.
let us assume(quantum mechanically) there are two particles each having the same state, composed from the superposition of two independent states. these particles were initially together and later taken apart. (i am trying to use the concept of entanglement here). now if i effect the state of one particle, the other particle will also get affected in the same manner even if nothing is acting upon it, no matter what the distance between them. doesn't this mean that entanglement is faster than light in a sense? or am i wrong in my basics itself?

anonymous · Answer

Entanglement is instantaneous but it transfers no information thus does not violate relativity.

anonymous · Answer

I really don't understand how people say entanglement does not transfer information!? I know everyone including Professor Kaku says it.. But why ?. i mean we can use a lot of such pairs, then decide on some protocol, and then use the quantum states to give information just like how we use bits (maybe one state is off, and some other state is on)