The conversation between human and AI assistant.
What are the proofs of quantum entanglement?
How was the Bell test conducted?
The Bell test involves creating pairs of entangled particles and measuring their spin along different directions. The results of the measurements are used to calculate a quantity called "Bell's inequality", which is violated in a way that is only possible with entangled particles. This experiment reinforces the idea that entanglement is a real phenomenon and cannot be explained by classical physics.