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Quantum Mechanics pp 219–231Cite as

Entanglement and Experimental Tests of Quantum Mechanics

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Abstract

Equations (7.3)–(7.6) display two possible features appearing in the description of bipartite systems: in the first two equations, each subsystem possesses its own quantum state \({\varphi }_{p}\), which constitutes a complete description of the physical state of the subsystem (a familiar situation from classical physics). This feature of separability does not hold for the last two equations. Schrödinger was the first to emphasize the non-classical features of “entangled” states and coined this term in [76].

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Notes

  1. 1.

    Intensive use has been made of [78], [79].

  2. 2.

    The present argument is the spin version of the EPR original one. The adaptation is due to David Bohm [80].

  3. 3.

    The Bell inequality described here is taken from [82].

  4. 4.

    The two loopholes have not been closed yet in a single experiment.

  5. 5.

    This type of entanglement constitutes the basis for understanding the emergence of classical macrosystems from the quantum substrate (Sect. 14.2 † ).

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Bes, D.R. (2012). Entanglement and Experimental Tests of Quantum Mechanics. In: Quantum Mechanics. Graduate Texts in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20556-9_12

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