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FLASH—A superluminal communicator based upon a new kind of quantum measurement


The FLASH communicator consists of an apparatus which can distinguish between plane unpolarized (PUP) and circularly unpolarized (CUP) light plus a simple EPR arrangement. FLASH exploits the peculiar properties of “measurements of the Third Kind.” One purpose of this article is to focus attention on the operation of idealized laser gain tubes at the one-photon limit.

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  1. J. S. Bell,Physics 1, 195 (1964); J. F. Clauser and A. Shimony,Repts. Prog. Phys. 41, 1881 (1978); B. d'Espagnat,Scientific American 241, 158 (1979); N. Herbert,Am. Jour. Phys. 43, 315 (1975).

    Google Scholar 

  2. P. Eberhard,Nuovo Cimento 46B, 392 (1978).

    Google Scholar 

  3. G. C. Ghirardi and T. Weber,Lett. Nuovo Cimento 26, 599 (1979); G. C. Ghirardi, A. Rimini, and T. Weber,Lett. Nuovo Cimento 27, 293 (1980).

    Google Scholar 

  4. N. Herbert,QUICK—A New Superluminal Transmission Concept, C-LIFE Report #3753 (April 1979) (unpublished).

  5. A. L. Schawlow and C. H. Townes,Phys. Rev. 112, 1940 (1958).

    Google Scholar 

  6. L. Mandel,Phys. Rev. 152, 438 (1966).

    Google Scholar 

  7. G. D. Blake and D. B. Scarl,Phys. Rev. 19A, 1948 (1979); D. B. Scarl and S. R. Smith,Phys. Rev. 10A, 709 (1974); D. B. Scarl,Phys. Rev. 175, 1661 (1968).

    Google Scholar 

  8. A. Peres, inMathematical Foundations of Quantum Theory, A. R. Marlow, ed. (Academic Press, 1978), p. 357.

  9. W. Pauli,Handbuch der Physik Vol. 5 (Springer-Verlag, 1957), p. 73.

  10. N. Cufaro-Petroni, A. Garuccio, F. Selleri, and J.-P. Vigier,Compt. Rend. 290B, 111 (1980).

    Google Scholar 

  11. G. C. Ghirardi, F. Miglietta, A. Rimini, and T. Weber,Phys. Rev. 24D, 347 (1981);Phys. Rev. 24D, 353 (1981).

    Google Scholar 

  12. A. Szczepanski,Found. Phys. 6, 427 (1976).

    Google Scholar 

  13. R. Miles, G. Laufer, C. Paddock, and G. Faris,Applied Optics 19, 3595 (1980).

    Google Scholar 

  14. H. G. Ahlstrom,Applied Optics 20, 1902 (1981).

    Google Scholar 

  15. J. Cramer, private communication.

  16. N. Harvard, private communication.

  17. E. B. Rockower, N. B. Abraham, and S. R. Smith,Phys. Rev. 17A, 1100 (1978).

    Google Scholar 

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FLASH: acronym for First Laser-Amplified Superluminal Hookup.

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Herbert, N. FLASH—A superluminal communicator based upon a new kind of quantum measurement. Found Phys 12, 1171–1179 (1982).

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  • Quantum Measurement
  • Peculiar Property
  • Laser Gain
  • Idealize Laser
  • Gain Tube