Quantum entanglement: Difference between revisions

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'''Quantum entanglement''' is a [[quantum mechanics|quantum mechanical]] phenomenon in which the [[quantum state]]s of two or more objects have to be described with reference to each other, even though the individual objects may be [[space|spatially separated]]. This leads to [[correlation]]s between observable physical properties of the systems that are stronger than any classical correlations. As a result, measurements performed on one system may be interpreted as "influencing" other systems entangled with it. However, no [[information]] can be transmitted through entanglement.

Quantum entanglement is the basis for emerging [[technology|technologies]] such as [[quantum computer|quantum computing]] and [[quantum cryptography]] as well as the realistic implication of StarTrek like matter transporters. At the same time, it produces some of the more theoretically and philosophical disturbing

aspects of the theory, as it makes quantum mechanics inconsistent with the seemingly

obvious principle of local realism which is that all objects have a well defined state and information about that state should not be transferred instantaneously.