Quantum entanglement is a fascinating phenomenon that occurs when two or more particles become linked together in such a way that the state of one particle is dependent on the state of the others, regardless of the spatial separation between them. This means that the properties of entangled particles are intrinsically connected, even if they are far apart.

An important example of quantum entanglement is the creation of an entangled pair of electrons. Let's consider a scenario where two electrons are initially in a superposition of spin up and spin down states. When we measure the spin of one electron and find it to be up, instantaneously, regardless of the distance, the spin of the other electron will be measured to be down. This connection between the two electrons persists, regardless of the spatial separation between them.

It is important to note that entanglement does not violate the principles of relativity, as no information is being transmitted faster than the speed of light. Instead, it showcases the mysterious and non-local nature of quantum mechanics.