Approaching single temporal mode operation in twin beams generated by pulse pumped high gain spontaneous four wave mixing

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Nannan Liu
  • Yuhong Liu
  • Xueshi Guo
  • Lei Yang
  • Xiaoying Li

Detail(s)

Original languageEnglish
Pages (from-to)1096-1108
Journal / PublicationOptics Express
Volume24
Issue number2
Publication statusPublished - 25 Jan 2016
Externally publishedYes

Abstract

By investigating the intensity correlation function, we study the spectral/temporal mode properties of twin beams generated by the pulse-pumped high gain spontaneous four wave mixing (SFWM) in optical fiber from both the theoretical and experimental aspects. The results show that the temporal property depends not only on the phase matching condition and the filters applied in the signal and idler fields, but also on the gain of SFWM. When the gain of SFWM is low, the spectral/temporal mode properties of the twin beams are determined by the phase matching condition and optical filtering and are usually of multi-mode nature, which leads to a value larger than 1 but distinctly smaller than 2 for the normalized intensity correlation function of individual signal/idler beam. However, when the gain of SFWM is very high, we demonstrate the normalized intensity correlation function of individual signal/idler beam approaches to 2, which is a signature of single temporal mode. This is so even if the frequencies of signal and idler fields are highly correlated so that the twin beams have multiple modes in low gain regime. We find that the reason for this behavior is the dominance of the fundamental mode over other higher order modes at high gain. Our investigation is useful for constructing high quality multi-mode squeezed and entangled states by using pulse-pumped spontaneous parametric down-conversion and SFWM.

Bibliographic Note

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Citation Format(s)

Approaching single temporal mode operation in twin beams generated by pulse pumped high gain spontaneous four wave mixing. / Liu, Nannan; Liu, Yuhong; Guo, Xueshi; Yang, Lei; Li, Xiaoying; Ou, Z. Y.

In: Optics Express, Vol. 24, No. 2, 25.01.2016, p. 1096-1108.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review