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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 7 — Mar. 26, 2012
  • pp: 7507–7515

Spectral properties of high-gain parametric down-conversion

K. Yu. Spasibko, T. Sh. Iskhakov, and M. V. Chekhova  »View Author Affiliations

Optics Express, Vol. 20, Issue 7, pp. 7507-7515 (2012)

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High-gain parametric down-conversion (PDC) is a source of bright squeezed vacuum, which is a macroscopic nonclassical state of light and a promising candidate for quantum information applications. Here we study its properties, such as the intensity spectral width and the spectral width of pairwise correlations. In agreement with the theory, we observe an increase in the spectral width by 27% compared with the low-gain PDC. Frequency cross- and auto-correlations are registered by measuring the reduction of noise in the difference of PDC intensities at various pairs of wavelengths. The noise reduction plots also demonstrate super-bunching typical for collinear frequency-degenerate PDC.

© 2012 OSA

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

Original Manuscript: January 4, 2012
Revised Manuscript: February 17, 2012
Manuscript Accepted: February 27, 2012
Published: March 19, 2012

K. Yu. Spasibko, T. Sh. Iskhakov, and M. V. Chekhova, "Spectral properties of high-gain parametric down-conversion," Opt. Express 20, 7507-7515 (2012)

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