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Optics Letters

Optics Letters


  • Vol. 21, Iss. 19 — Oct. 1, 1996
  • pp: 1597–1599

Observation of sub-Poissonian light in traveling-wave second-harmonic generation

SunHyun Youn, Sang-Kyung Choi, Prem Kumar, and Ruo-Ding Li  »View Author Affiliations

Optics Letters, Vol. 21, Issue 19, pp. 1597-1599 (1996)

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We report the generation of sub-Poissonian pulses of light by means of traveling-wave second-harmonic generation (SHG) in a type II phase-matched nonlinear crystal. On direct detection, the quantum noise on the output light, which is polarized orthogonally to the input fundamental field, is measured to be below the shot-noise limit by as much as 0.3 ± 0.2 dB (6 ± 4%). We show that the input fundamental-power dependence of the measured Fano factor, direct-detection noise as a fraction of the shot-noise limit, is in qualitative agreement with the quantum theory of SHG.

© 1996 Optical Society of America

Original Manuscript: April 22, 1996
Published: October 1, 1996

SunHyun Youn, Sang-Kyung Choi, Prem Kumar, and Ruo-Ding Li, "Observation of sub-Poissonian light in traveling-wave second-harmonic generation," Opt. Lett. 21, 1597-1599 (1996)

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  1. L. A. Wu, M. Xiao, H. J. Kimble, J. Opt. Soc. Am. B 4, 1465 (1987); E. S. Polzik, J. Carri, H. J. Kimble, Appl. Phys. B 55, 279 (1992); G. Breitenbach, T. Müller, S. F. Pereira, J.-Ph. Poizat, S. Schiller, J. Mlynek, J. Opt. Soc. Am. B 12, 2304 (1995). [CrossRef]
  2. R. E. Slusher, P. Grangier, A. LaPorta, B. Yurke, M. J. Potasek, Phys. Rev. Lett. 59, 2566 (1987); P. D. Townsend, R. Loudon, Phys. Rev. A 45, 458 (1992); T. Hirano, M. Matsuoka, Appl. Phys. B 55, 233 (1992); C. Kim, P. Kumar, Phys. Rev. Lett. 73, 1605 (1994). [CrossRef] [PubMed]
  3. S. F. Pereira, M. Xiao, H. J. Kimble, J. L. Hall, Phys. Rev. A 38, 4931 (1988). [CrossRef] [PubMed]
  4. A. Sizmann, R. J. Horowicz, G. Wagner, G. Leuchs, Opt. Commun. 80, 138 (1990); P. Kürz, R. Paschotta, K. Fiedler, A. Sizmann, G. Leuchs, J. Mlynek, Appl. Phys. B 55, 216 (1992); R. Paschotta, M. Collett, P. Kürz, K. Fiedler, H. A. Bachor, J. Mlynek, Phys. Rev. Lett. 72, 3807 (1994); T. C. Ralph, M. S. Taubman, A. G. White, D. E. McClelland, H.-A. Bachor, Opt. Lett. 20, 1316 (1995); H. Tsuchida, Opt. Lett. 20, 2240 (1995). [CrossRef] [PubMed]
  5. Z. Y. Ou, Phys. Rev. A 49, 2106 (1994). [CrossRef] [PubMed]
  6. R.-D. Li, P. Kumar, Opt. Lett. 18, 1961 (1993); Phys. Rev. A 49, 2157 (1994). [CrossRef] [PubMed]
  7. R.-D. Li, P. Kumar, J. Opt. Soc. Am. B 12, 2310 (1995). [CrossRef]
  8. J. H. Shapiro, IEEE J. Quantum Electron. QE-21, 237 (1985). [CrossRef]
  9. O. Aytür, P. Kumar, Opt. Lett. 15, 390 (1990). [CrossRef] [PubMed]
  10. R.-D. Li, S.-K. Choi, C. Kim, P. Kumar, Phys. Rev. A Rapid Commun. 51, R3429 (1995).
  11. This argument would break down if a conversion efficiency approaching 100% could be obtained. However, because of the limited pump power, this regime of operation was experimentally inaccessible.
  12. G. Stegeman, M. Sheik-Bahae, E. W. Van Stryland, G. Assanto, Opt. Lett. 18, 13 (1992); D. C. Hutchings, J. S. Aitchison, C. N. Ironside, Opt. Lett. 18, 793 (1993). [CrossRef] [PubMed]
  13. Although, in principle, it should be possible to coherently subtract the leakage field and recover the squeezed vacuum with the use of an appropriate beam splitter, it is not clear how one would experimentally generate the needed coherent-state beam, because the spatial profile of the leakage mode is power dependent and non-Gaussian.

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