Home | About Journal | Web Links | E-mail Alerts | RSS RSS Icon | Browse

Wigner-function theory and decoherence of the quantum-injected optical parametric amplifier

Source: Phys. Rev. A 80, 032318 (2009); doi:10.1103/PhysRevA.80.032318

Published 17 September 2009

KEYWORDS and PACS
Keywords
PACS
  • 03.67.-a
    Quantum information
  • 03.65.Yz
    Decoherence; open systems; quantum statistical methods
  • 42.50.Ex
    Optical implementations of quantum information processing and transfer
  • 03.65.Wj
    State reconstruction, quantum tomography
  • YEAR: 2009
RELATED DATABASES

To view database links for this article,
you need to log in.
To view database links for this article,
you need to log in.
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
Nicolò Spagnolo,1,2 Chiara Vitelli,1,2 Tiziano De Angelis,1 Fabio Sciarrino,1,2 and Francesco De Martini1,3
1Dipartimento di Fisica, “Sapienza” Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
2Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Piazzale Aldo Moro 5, I-00185 Roma, Italy
3Accademia Nazionale dei Lincei, via della Lungara 10, I-00165 Roma, Italy
Recent experimental results demonstrated the generation of a macroscopic quantum superposition (MQS), involving a number of photons in excess of 5×104, which showed a high resilience to losses. In order to perform a complete analysis on the effects of decoherence on these multiphoton fields, obtained through the quantum injected optical parametric amplifier, we investigate theoretically the evolution of the Wigner functions associated to these states in lossy conditions. Recognizing the presence of negative regions in the W representation as an evidence of nonclassicality, we focus our analysis on this feature. A close comparison with the MQS based on coherent |alpha> states allows us to identify differences and analogies. ©2009 The American Physical Society
History: Received 12 May 2009; published 17 September 2009
Permalink: http://link.aps.org/abstract/PRA/v80/e032318

REFERENCES (56)

For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. W. H. Zurek, Phys. Today 44(10), 36 (1991).
  2. W. H. Zurek, Rev. Mod. Phys. 75, 715 (2003).
  3. W. Dur, C. Simon, and J. I. Cirac, Phys. Rev. Lett. 89, 210402 (2002).
  4. W. Dur and H.-J. Briegel, Phys. Rev. Lett. 92, 180403 (2004).
  5. M. Brune, S. Haroche, J. M. Raimond, L. Davidovich, and N. Zagury, Phys. Rev. A 45, 5193 (1992).
  6. J. M. Raimond, M. Brune, and S. Haroche, Rev. Mod. Phys. 73, 565 (2001).
  7. J. S. Neergaard-Nielsen, B. M. Nielsen, C. Hettich, K. Molmer, and E. S. Polzik, Phys. Rev. Lett. 97, 083604 (2006).
  8. J. Eisert, S. Scheel, and M. B. Plenio, Phys. Rev. Lett. 89, 137903 (2002).
  9. F. De Martini, Phys. Rev. Lett. 81, 2842 (1998).
  10. F. De Martini, F. Sciarrino, and V. Secondi, Phys. Rev. Lett. 95, 240401 (2005).
  11. F. Sciarrino and F. De Martini, Phys. Rev. A 72, 062313 (2005).
  12. E. Nagali, T. De Angelis, F. Sciarrino, and F. De Martini, Phys. Rev. A 76, 042126 (2007).
  13. F. De Martini, F. Sciarrino, and C. Vitelli, Phys. Rev. Lett. 100, 253601 (2008).
  14. K. E. Cahill and R. J. Glauber, Phys. Rev. 177, 1882 (1969).
  15. K. Banaszek and K. Wodkiewicz, Phys. Rev. A 58, 4345 (1998).
  16. M. J. Collett, Phys. Rev. A 38, 2233 (1988).
  17. F. De Martini, F. Sciarrino, and N. Spagnolo, Phys. Rev. A 79, 052305 (2009).
  18. E. C. G. Sudarshan, Phys. Rev. Lett. 10, 277 (1963).
  19. O. Cohen, Phys. Rev. A 56, 3484 (1997).
  20. A. Biswas and G. S. Agarwal, Phys. Rev. A 75, 032104 (2007).
  21. A. P. Lund, H. Jeong, T. C. Ralph, and M. S. Kim, Phys. Rev. A 70, 020101(R) (2004).
  22. W. Schleich, M. Pernigo, and F. L. Kien, Phys. Rev. A 44, 2172 (1991).
  23. Z. Y. Ou, S. F. Pereira, H. J. Kimble, and K. C. Peng, Phys. Rev. Lett. 68, 3663 (1992).
  24. Y. Zhang, H. Wang, X. Li, J. Jing, C. Xie, and K. Peng, Phys. Rev. A 62, 023813 (2000).
  25. C. Silberhorn, P. K. Lam, O. Weiss, F. König, N. Korolkova, and G. Leuchs, Phys. Rev. Lett. 86, 4267 (2001).
  26. W. P. Bowen, R. Schnabel, P. K. Lam, and T. C. Ralph, Phys. Rev. Lett. 90, 043601 (2003).
  27. C. Schori, J. L. Sorensen, and E. S. Polzik, Phys. Rev. A 66, 033802 (2002).
  28. G. A. Durkin, C. Simon, J. Eisert, and D. Bouwmeester, Phys. Rev. A 70, 062305 (2004).
  29. U. Leonhardt, Phys. Rev. A 48, 3265 (1993).
  30. B. Huttner, A. Muller, J. D. Gautier, H. Zbinden, and N. Gisin, Phys. Rev. A 54, 3783 (1996).
  31. D. Pelliccia, V. Schettini, F. Sciarrino, C. Sias, and F. De Martini, Phys. Rev. A 68, 042306 (2003).
  32. F. De Martini, D. Pelliccia, and F. Sciarrino, Phys. Rev. Lett. 92, 067901 (2004).
ADVERTISEMENT