OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 268–270

Nonexistence of entanglement sudden death in dephasing of high NOON states

Asma Al-Qasimi and Daniel F.V. James  »View Author Affiliations


Optics Letters, Vol. 34, Issue 3, pp. 268-270 (2009)
http://dx.doi.org/10.1364/OL.34.000268


View Full Text Article

Enhanced HTML    Acrobat PDF (77 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We study the dynamics of entanglement in continuous variable quantum systems. Specifically, we study the phenomena of entanglement sudden death (ESD) in general two-mode-N-photon states undergoing pure dephasing. We show that for these circumstances, ESD never occurs. These states are generalizations of the so-called high NOON states (i.e., a superposition of N photons in the first mode, O in the second, with O photons in the first, N in the second), shown to decrease the Rayleigh limit of λ to λ N , which promises great improvement in resolution of interference patterns if states with large N are physically realized [ Phys. Rev. Lett. 85, 2733 (2000) ]. However, we show that in dephasing NOON states, the time to reach some critical visibility V crit , scales inversely with N 2 . On the practical level, this shows that as N increases, the visibility degrades much faster, which is likely to be a considerable drawback for any practical application of these states.

© 2009 Optical Society of America

OCIS Codes
(270.5290) Quantum optics : Photon statistics
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Image Processing

History
Original Manuscript: October 3, 2008
Revised Manuscript: November 25, 2008
Manuscript Accepted: November 26, 2008
Published: January 26, 2009

Citation
Asma Al-Qasimi and Daniel F. V. James, "Nonexistence of entanglement sudden death in dephasing of high NOON states," Opt. Lett. 34, 268-270 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-3-268


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. T. Yu and J. H. Eberly, Phys. Rev. Lett. 93, 140404 (2004). [CrossRef] [PubMed]
  2. T. Yu and J. H. Eberly, Opt. Commun. 264, 393 (2006). [CrossRef]
  3. A. Al-Qasimi and D. F. V. James, Phys. Rev. A 77, 012117 (2008). [CrossRef]
  4. J. Li, K. Chalapat, and G. S. Paraoanu, J. Low Temp. Phys. 153, 294 (2008). [CrossRef]
  5. T. Yu and J. H. Eberly, “Many-body separability of warm qubits,” arXiv:0707.3215.
  6. C.-H. Chou, T. Yu, and B. L. Hu, Phys. Rev. E 77, 011112 (2008). [CrossRef]
  7. J. P. Paz and A. J. Roncaglia, Phys. Rev. Lett. 100, 220401 (2008). [CrossRef] [PubMed]
  8. S.-Y. Lin, C.-H. Chou, and B. L. Hu, Phys. Rev. D 78, 125025 (2008). [CrossRef]
  9. A. N. Boto, P. Kok, D. S. Abrams, S. L. Braunstein, C. P. Williams, and J. P. Dowling, Phys. Rev. Lett. 85, 2733 (2000). [CrossRef] [PubMed]
  10. W. K. Wootters, Phys. Rev. Lett. 80, 2245 (1998). [CrossRef]
  11. A. Peres, Phys. Rev. Lett. 77, 1413 (1996). [CrossRef] [PubMed]
  12. L.-M. Duan, G. Giedke, J. I. Cirac, and P. Zoller, Phys. Rev. Lett. 84, 2722 (2000). [CrossRef] [PubMed]
  13. R. Simon, Phys. Rev. Lett. 84, 2726 (2000). [CrossRef] [PubMed]
  14. M. W. Mitchell, J. S. Lundeen, and A. M. Steinberg, Nature 429, 161 (2004). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited