4.6 Article

Spectral correlations in a fiber-optical parametric oscillator

Journal

PHYSICAL REVIEW A
Volume 103, Issue 4, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.103.043503

Keywords

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Funding

  1. French Agence Nationale de la Recherche through the LabEx EMC3 program
  2. French Agence Nationale de la Recherche through RIFT project [ANR-15-CE08-0018-01]
  3. European Union
  4. European Regional Development Fund
  5. Regional Council of Normandie (SPIDER project)
  6. Regional Council of Normandie (TOFUproject)
  7. Regional Council of Normandie (IFROST project)
  8. Agence Nationale de la Recherche (ANR) [ANR-15-CE08-0018] Funding Source: Agence Nationale de la Recherche (ANR)

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The study explores the potential of shaping spectral correlations by tuning parameters to track energy transfers within FOPO. By analyzing wavelength correlations, insights into spectrotemporal dynamics and correlation patterns are revealed, showcasing the versatility of fiber-optical sources in quantum optics applications.
Tailoring wavelength correlations in fiber-optical sources through nonlinear phenomena could drive many quantum optics applications. However, to date, such correlations have not been explored within fiber-optical parametric oscillators (FOPO), which are now widespread wavelength-agile sources. We experimentally investigate the real-time dynamics of a synchronously pumped picosecond FOPO with a combination of statistical tools using time-stretch spectroscopy. The study of wavelength correlations allows us to unveil particular spectrotemporal dynamics and correlation patterns. Specifically, we demonstrate that combining mutual information (MI) analysis and least-squares regression with large ensembles of shot-to-shot spectra allows to efficiently track energy transfers from pump to parametric waves. In addition, we show that tuning the FOPO parameters enables the shaping of spectral correlations to a certain extent.

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