OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 10 — May. 12, 2008
  • pp: 7369–7381

Delay of squeezing and entanglement using electromagnetically induced transparency in a vapour cell

G. Hétet, B. C. Buchler, O. Glöckl, M. T. L. Hsu, A. M. Akulshin, H. -A. Bachor, and P. K. Lam  »View Author Affiliations

Optics Express, Vol. 16, Issue 10, pp. 7369-7381 (2008)

View Full Text Article

Enhanced HTML    Acrobat PDF (731 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We demonstrate experimentally the delay of squeezed light and entanglement using Electromagnetically Induced Transparency (EIT) in a rubidium vapour cell. We perform quadrature amplitude measurements of the probe field and find no appreciable excess noise from the EIT process. From input squeezing of 3.2±0.5 dB at low sideband frequencies, we observed the survival of 2.0±0.5 dB of squeezing at the EIT output. By splitting the squeezed light on a beam-splitter, we generated biased entanglement between two beams. We transmit one of the entangled beams through the EIT cell and correlate the quantum statistics of this beam with its entangled counterpart. We experimentally observed a 2.2±0.5µs delay of the biased entanglement and obtained a preserved degree of wavefunction inseparability of 0.71±0.01, below the unity value for separable states.

© 2008 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

Original Manuscript: March 25, 2008
Revised Manuscript: May 5, 2008
Manuscript Accepted: May 5, 2008
Published: May 6, 2008

G. Hètet, B. C. Buchler, O. Glöeckl, M. T. L. Hsu, A. M. Akulshin, H. A. Bachor, and P. K. Lam, "Delay of squeezing and entanglement using electromagnetically induced transparency in a vapour cell," Opt. Express 16, 7369-7381 (2008)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. C. Simon, H. de Riedmatten, M. Afzelius, N. Sangouard, H. Zbinden, and N. Gisin,"Quantum repeaters with photon pair sources and multimode memories," Phys. Rev. Lett. 98, 190503 (2007). [CrossRef] [PubMed]
  2. L. M. Duan, M. D. Lukin, J. I. Cirac, and P. Zoller, "Long-distance quantum communication with atomic ensembles and linear optics," Nature 414, 413 (2001). [CrossRef] [PubMed]
  3. E. Knill, R. Laflamme, and G. J. Milburn,"A scheme for efficient quantum computation with linear optics," Nature 409, 46 (2001). [CrossRef] [PubMed]
  4. M. Fleischhauer and M. D. Lukin, "Dark-State Polaritons in electromagnetically induced transparency," Phys. Rev. Lett. 84, 5094 (2000). [CrossRef] [PubMed]
  5. L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas," Nature 397, 594 (1999). [CrossRef]
  6. C. Liu, Z. Dutton, C. H. Behroozi, and L. V. Hau, "Observation of coherent optical information storage in an atomic medium using halted light pulses," Nature 409, 490 (2001). [CrossRef] [PubMed]
  7. D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, "Storage of light in atomic vapor," Phys. Rev. Lett. 86, 783 (2001). [CrossRef] [PubMed]
  8. M. D. Eisaman, A. Andr�??e, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, "Electromagnetically induced transparency with tunable single-photon pulses," Nature 438, 837 (2005). [CrossRef] [PubMed]
  9. T. Chaneliere, D. N. Matsukevich, S. D. Jenkins, S.-Y. Lan, T. A. B. Kennedy, and A. Kuzmich, "Storage and retrieval of single photons transmitted between remote quantum memories," Nature 438, 833 (2005). [CrossRef] [PubMed]
  10. D. Akamatsu, Y. Yokoi, M. Arikawa, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, "Ultraslow propagation of squeezed vacuum pulses with electromagnetically induced transparency," Phys. Rev. Lett. 99, 153602 (2007). [CrossRef] [PubMed]
  11. J. Appel, E. Figueroa, D. Korystov, M. Lobino and A. I. Lvovsky, "Quantum memory for squeezed light," Phys. Rev. Lett. 100, 093602 (2008). [CrossRef] [PubMed]
  12. K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa and M. Kozuma, "Storage and Retrieval of a Squeezed Vacuum," Phys. Rev. Lett. 100, 093601 (2008). [CrossRef] [PubMed]
  13. M. Arikawa, K. Honda, D. Akamatsu, Y. Yokoi, K. Akiba, S. Nagatsuka, A. Furusawa, and M. Kozuma, "Observation of electromagnetically induced transparency for a squeezed vacuum with the time domain method," Opt. Express 15, 11849 (2007). [CrossRef] [PubMed]
  14. G. Hetet, O. Glockl, K. A . Pilypas, C. C. Harb, B. C . Buchler, H.-A. Bachor, and P. K . Lam, "Squeezed light for bandwidth limited atom optics experiments at the Rubidium D1 line," J. Phys. B At. Mol. Opt. Phys. 40, 221 (2007). [CrossRef]
  15. W. P. Bowen, P. K. Lam, and T. C. Ralph, "Biased EPR entanglement and its application to teleportation," J. Mod. Opt. 50, 801 (2003).
  16. B. Julsgaard, J. Sherson, J. I. Cirac, J. Fiurasek, and E. S. Polzik, "Experimental demonstration of quantum memory for light," Nature 432, 482 (2004). [CrossRef] [PubMed]
  17. M. T. L. Hsu, G. Hetet, O. Glockl, J. J. Longdell, B. C. Buchler,H.-A. Bachor,P. K. Lam, "Quantum study of information delay in electromagnetically induced transparency," Phys. Rev. Lett. 97, 183601 (2006). [CrossRef] [PubMed]
  18. G. Hetet, A . Peng, M. T. Johnsson, J. J . Hope, and P. K . Lam, "Characterization of electromagnetically-inducedtransparency-based continuous-variable quantum memories," Phys. Rev. A,  77, 012323 (2008). [CrossRef]
  19. E. Figueroa, F. Vewinger, J. Appel, and A. I. Lvovsky, "Decoherence of electromagnetically induced transparency in atomic vapor," Opt. Lett. 31, 2625 (2006). [CrossRef] [PubMed]
  20. J. Cviklinski, J. Ortalo, A. Bramati, M. Pinard, and E. Giacobino, "Reversible Quantum Interface for Tunable Single-sideband Modulation," arXiv 0711.0264 (2007).
  21. T. Tanimura, D. Akamatsu, Y. Yokoi, A. Furusawa and M. Kozuma, "Generation of a squeezed vacuum resonant on a rubidium D1 line with periodically poled KTiOPO4," Opt. Lett. 31, 2344, (2006) [CrossRef] [PubMed]
  22. K. McKenzie, E. E. Mikhailov, K. Goda, P. K. Lam, N. Grosse, M. B. Gray, N. Mavalvala, and D. E McClelland, "Quantum noise locking," J. Opt. B: Quantum Semiclass. Opt. 7, S421(2005). [CrossRef]
  23. C. Schori, J. Sørensen, and E. S. Polzik, "Narrow-band frequency tunable light source of continuous quadrature entanglement," Phys. Rev. A 66, 033802 (2002). [CrossRef]
  24. J. Laurat, T. Coudreau, G. Keller, N. Treps, and C. Fabre, "Compact source of Einstein-Podolsky-Rosen entanglement and squeezing at very low noise frequencies," Phys. Rev. A 70, 042315 (2004). [CrossRef]
  25. K. McKenzie, N. Grosse,W. P. Bowen, S. E. Whitcomb, M. B. Gray, D. E. McClelland and P. K. Lam, "Squeezing in the Audio Gravitational-Wave Detection Band," Phys. Rev. Lett. 93, 161105 (2004). [CrossRef] [PubMed]
  26. A. Peng, M. Johnsson, W. P. Bowen, P. K. Lam, H.-A. Bachor, and J. J. Hope, "Squeezing and entanglement delay using slow light," Phys. Rev. A 71, 033809 (2004). [CrossRef]
  27. Z. Y. Ou, S. F. Pereira, H. J. Kimble, and K. C. Peng, "Realization of the Einstein-Podolsky-Rosen paradox for continuous variables," Phys. Rev. Lett. 68, 3663 (1992). [CrossRef] [PubMed]
  28. W. P. Bowen, R. Schnabel, P. K. Lam, and T. C. Ralph, "Experimental Investigation of Criteria for Continuous Variable Entanglement," Phys. Rev. Lett. 90, 043601 (2003). [CrossRef] [PubMed]
  29. W. P. Bowen, R. Schnabel, P. K. Lam, and T. C. Ralph, "Experimental characterization of continuous-variable entanglement," Phys. Rev. A 69, 012304 (2004). [CrossRef]
  30. M. D. Reid and P. D. Drummond, "Quantum correlations of phase in nondegenerate parametric oscillation," Phys. Rev. Lett. 60, 2731-2733 (1988). [CrossRef] [PubMed]
  31. L. M. Duan, G. Giedke, J. I. Cirac, and P. Zoller, "Inseparability criterion for continuous variable systems," Phys. Rev. Lett. 84, 2722 (2000). [CrossRef] [PubMed]
  32. R. Simon, "Peres-Horodecki separability criterion for continuous variable systems," Phys. Rev. Lett. 84, 2726 (2000). [CrossRef] [PubMed]
  33. F. Grosshans and P. Grangier, "Reverse reconciliation protocols for quantum cryptography with continuous variables" quant-ph/0204127, (2002).
  34. H. Vahlbruch, S. Chelkowski, B. Hage, A. Franzen, K. Danzmann, and R. Schnabel, "�??Coherent control of vacuum squeezing in the gravitational-wave detection band," Phys. Rev. Lett. 97, 011101 (2006). [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.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited