Question

what is quantum entanglement

Answer 1

When to objects are separated from each other spatially then if the quantum state of one or more object is explained in terms or with respect to other object or objects That phenomenon is know as quantum entanglement

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Answer 2

Quantum entanglement is a quantum mechanical phenomenon in which the quantum states of two or more objects have to be described with reference to each other, even though the individual objects may be spatially separated.