Il Nuovo Cimento D

, Volume 5, Issue 1, pp 23–39 | Cite as

A careful estimation of photon rescatterig in atomic-cascade experimental tests of Bell's inequality

  • S. Pascazio
Article

Summary

In this paper we show that, in every atomic-cascade experiment performed up to now for testing Bell's inequality, the second photon of the atomic cascade undergoes rescattering with considerable probability. The only experiment of this type in which rescattering is negligible is the Holt and Pipkin's one, but this is also the only experiment whose results grossly violate quantum-mechanical predictions.

PACS. 03.65

Quantum theory quantum mechanics 

Riassunto

Nel presente lavoro si mostra che, in ogni esperimento con cascata atomica realizzato fino ad oggi per indagare la disuguaglianza di Bell, la probabilità che il secondo fotone della cascata atomica subisca rescattering è notevolumente alta. L'unico esperimento del tipo suddetto in cui il rescattering è trascurabile è quello di Holt e Pipkin, ma questo è anche l'unico esperimento i cui risultati sono in netto contrasto con le previsioni quantomeccaniche.

Резюме

В этой статье мы показываем, что в экспериментах по наблюдению атомных каскадов, вьшолненных для проверки неравенства Белла, второй фотон атомного каскада претерпевает перерассеяние с большой вероятностью. Единственный эксперимент этого типа, в котором процесс перерассеяния пренебрежимо мал, является эксперимент Хольта и Пипкина. Но указанный эксперимент, в свою очередь, является единственным экспериментом, результаты которого существенно противоречат предсказаниям квантовой межаники.

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References

  1. (1).
    S. J. Freedman andJ. F. Clauser:Phys. Rev. Lett.,28, 938 (1972).ADSCrossRefGoogle Scholar
  2. (2).
    R. A. Holt andF. M. Pipkin: Harvard University preprint (1974).Google Scholar
  3. (3).
    J. F. Clauser:Phys. Rev. Lett.,36, 1223 (1976).ADSCrossRefGoogle Scholar
  4. (4).
    E. S. Fry andR. C. Thompson:Phys. Rev. Lett.,37, 465 (1976).ADSCrossRefGoogle Scholar
  5. (5).
    A. Aspect, P. Grangier andG. Roger:Phys. Rev. Lett.,47, 460 (1981).ADSCrossRefGoogle Scholar
  6. (6).
    A. Aspect, P. Grangier andG. Roger:Phys. Rev. Lett.,49, 91 (1982).ADSCrossRefGoogle Scholar
  7. (7).
    A. Aspect, J. Dalibard andG. Roger:Phys. Rev. Lett.,49, 1804 (1982).ADSMathSciNetCrossRefGoogle Scholar
  8. (8).
    T. W. Marshall, E. Santos andF. Selleri:Phys. Lett. A,98, 5 (1983);T. W. Marshall:Phys. Lett. A,99, 163 (1983);A. Garuccio andF. Selleri:Phys. Lett. A,103, 99 (1984).ADSCrossRefGoogle Scholar
  9. (9).
    F. Selleri:Lett. Nuovo Cimento,39, 252 (1984).CrossRefGoogle Scholar
  10. (10).
    P. W. Milonni andP. L. Knight:Phys. Rev. A,10, 1096 (1974).ADSCrossRefGoogle Scholar
  11. (11).
    G. Giusfredi, P. Minguzzi, F. Strumia andM. Toselli:Z. Phys. A,274, 279 (1975).ADSCrossRefGoogle Scholar
  12. (12).
    F. Rohrlich:Science,221, 1251 (1983).ADSCrossRefGoogle Scholar
  13. (13).
    For a relativistic derivation of formulae (1) and (3) seeS. Pascazio: Tesi, Università di Bari (1984).Google Scholar
  14. (14).
    R. H. Dicke:Phys. Rev.,93, 99 (1954).ADSCrossRefGoogle Scholar
  15. (15).
    A. Aspect: These, Université de Paris-Sud, Centre d'Orsay (1983), p. 152, 166.Google Scholar
  16. (16).
    F. T. Arecchi andE. Courtens:Phys. Rev. A,2, 1730 (1970).ADSCrossRefGoogle Scholar
  17. (17).
    See, for example,R. P. Feynman:Lectures on Physics. Chapt. 18:Angular Momentum (Addison-Wesley, Reading, Mass., 1965).Google Scholar
  18. (18).
    A. Aspect: These, Université de Paris-Sud, Centre d'Orsay (1983), p. 191.Google Scholar
  19. (19).
    A. Aspect: These, Université de Paris-Sud, Centre d'Orsay (1983), p. 305.Google Scholar
  20. (20).
    A. Aspect: These, Université de Paris-Sud, Centre d'Orsay (1983), p. 202.Google Scholar
  21. (21).
    The same effect was studied, starting from a different point of view, by E. Santos. See, for example,E. Santos: to be published inOpen Question in Quantum Physics, edited byG. Tarozzi andA. van der Merwe,Fundamental Theories of Physics (Reidel Publ. Co., Dordrecht, 1984).Google Scholar

Copyright information

© Società Italiana di Fisica 1985

Authors and Affiliations

  • S. Pascazio
    • 1
    • 2
  1. 1.Dipartimento di Fisica dell'UniversitàBariItalia
  2. 2.Sezione di BariIstituto Nazionale di Fisica NucleareItalia

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