Undergrad Wondering why quantum entanglement occurs

[ebmg123]

hi there
I am an engineer but have a huge interest in physics and wanted to ask anyone who has any knowledge of why quantum entanglement occurs?

 

[PeroK]

why quantum entanglement occurs?

The conservation laws is one reason. E.g. conservation of spin angular momentum. If two spin 1/2 particles are created from a spin zero system, and you measure the spin of them both about some axis, then the measured spins must be equal and opposite.

Note that the same is true for classical particles. The difference is that in QM the particles spin is not determined at creation yet the measurements are perfectly correlated. This is often known as quantum non-locality. That's what all the fuss is about!

 

[ebmg123]

thnx a bunch that makes allot more sense