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In quantum mechanics, a quantum eraser experiment is an interferometer experiment that demonstrates several fundamental aspects of quantum mechanics, including quantum entanglement and complementarity. [1] [2]: 328 The quantum eraser experiment is a variation of Thomas Young's classic double-slit experiment. It establishes that when action is ...
Versions of the quantum eraser using entangled photons, however, are intrinsically non-classical. Because of that, in order to avoid any possible ambiguity concerning the quantum versus classical interpretation, most experimenters have opted to use nonclassical entangled-photon light sources to demonstrate quantum erasers with no classical analog.
Cosmic versions of the delayed-choice use photons emitted billions of years ago; the results are unchanged. [3] The concept of delayed choice has been productive of many revealing experiments. [4] New versions of the delayed choice concept use quantum effects to control the "choices", leading to quantum delayed-choice experiments.
The delayed-choice quantum eraser is a version of the EPR paradox in which the observation (or not) of interference after the passage of a photon through a double slit experiment depends on the conditions of observation of a second photon entangled with the first.
The following 7 pages use this file: Delayed-choice quantum eraser; Talk:Delayed-choice quantum eraser/Archive 1; Talk:Delayed-choice quantum eraser/Archive 4; Talk:Double-slit experiment/Archive 9; Talk:Quantum entanglement/Archive 4; User:OrbitTheSun/sandbox; User talk:Patrick0Moran
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Quantum eraser experiments demonstrate that wave behavior can be restored by erasing or otherwise making permanently unavailable the "which path" information. A simple do-it-at-home illustration of the quantum eraser phenomenon was given in an article in Scientific American . [ 56 ]