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Thermal states with variances smaller than vacuum variances

  • Session V: Squeezed and Nonclassical States
  • Conference paper
  • First Online:
Quantum Aspects of Optical Communications

Part of the book series: Lecture Notes in Physics ((LNP,volume 378))

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Abstract

We present a method to obtain thermal states with variances TSV smaller than vacuum variances in the formalism of non equilibrium thermo field dynamics NETFD and discuss the possibility to change these states in an isoentropic manner.

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References

  1. D. Deutsch: Phys. Rev. Lett. 50, 631 (1987).

    Google Scholar 

  2. H. Kandrup: Jour. Math. Phys., 28, 1398 (1987).

    Google Scholar 

  3. H. Kandrup: Phys. Rev.D 37, 3505 (1988).

    Google Scholar 

  4. H. Umezawa, H. Matsumoto and H. Tachiki: Thermo Field Dynamics and Condensed States (North-Holland, Amsterdam 1982).

    Google Scholar 

  5. A. Mann and M. Revzen: Phys. Lett. A 134, 273,(1989)

    Google Scholar 

  6. A. Mann, M. Revzen, K. Nakamura, H. Umezawa, and Y. Yamanaka, Jour. Math. Phys. 30, 2883, (1989).

    Google Scholar 

  7. T. Arimitsu, H. Umezawa and Y. Yamanaka: J. Math. Phys. 28, 2741 (1987)

    Google Scholar 

  8. I. Hardman, H. Umezawa and Y. Yamanaka: J. Math. Phys. 28, 2925, (1987).

    Google Scholar 

  9. A. Kireev, A. Mann, M. Revzen and H. Umezawa: Phys. Lett. A 142, 215, (1989).

    Google Scholar 

  10. W.H. Louisell: Quantum Statistical Properties of Radiation (John Wiley and Sons, New York 1973).

    Google Scholar 

  11. T. Arimitsu, H. Umezawa: Prog. Theor. Phys. 74, 429, (1985)

    Google Scholar 

  12. T. Arimitsu, H. Umezawa: Prog. Theor. Phys. 77, 32 and 53, (1987).

    Google Scholar 

  13. T. Arimitsu: Proc. of the Workshop on Thermo-Field Dynamics and their applications, Physica A 158, 317 (1989).

    Google Scholar 

  14. R. Jackiw: see 10. p. 269.

    Google Scholar 

  15. O. Eboli, R. Jackiw and So-Young Pi: Phys. Rev. D 37, 3557 (1988).

    Google Scholar 

  16. B.L. Schumaker: Phys. Rep. 135, 317, (1986).

    Google Scholar 

  17. T. Arimitsu, M. Guida and H. Umezawa: Physica A 148, 1, (1988)

    Google Scholar 

  18. T. Arimitsu, H. Umezawa, Y. Yamanaka, and N.J. Papastamatiou: Physica A 148 27, (1988).

    Google Scholar 

  19. H. Umezawa: Phys. Essays 2, 101, (1989).

    Google Scholar 

  20. I. Hardman, H. Umezawa, and Y. Yamanaka: Phys. Lett. A 146, 293, (1990).

    Google Scholar 

  21. C. Caves and B.L. Schumaker: Phys. Rev. A 31, 3068, (1985).

    Google Scholar 

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Authors and Affiliations

  1. ISEH Focsani, CTC Laboratory, Bd. Bucuresti 16, RO-5300, Focsani, Romania

    M. Chiranov

Authors
  1. M. Chiranov
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Editor information

Cherif Bendjaballah Osamu Hirota Serge Reynaud

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© 1991 Springer-Verlag

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Chiranov, M. (1991). Thermal states with variances smaller than vacuum variances. In: Bendjaballah, C., Hirota, O., Reynaud, S. (eds) Quantum Aspects of Optical Communications. Lecture Notes in Physics, vol 378. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-53862-3_192

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  • DOI: https://doi.org/10.1007/3-540-53862-3_192

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-53862-2

  • Online ISBN: 978-3-540-46366-5

  • eBook Packages: Springer Book Archive

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