Atomic-cascade experiment with detection of the recoil atom

S.F. Huelga, M. Ferrero, E. Santos

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)


    Bell's inequalities cannot be violated in atomic-cascade experiments, even with ideal apparatus, due to the three-body character of the atomic decay. Here we propose a new experiment that would block this loophole by means of a suitable selection of an ensemble of photon pairs. A threshold value for the quantum efficiency is found which may allow the discrimination between quantum mechanics and local-hidden-variables theories. Experimental requirements for performing such a test are discussed.
    Original languageEnglish
    Pages (from-to)181-186
    JournalEurophysics Letters
    Issue number3
    Publication statusPublished - 1994


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