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Singh, Amrit Pal [VerfasserIn]; Ast, Stefan [VerfasserIn]; Mehmet, Moritz [VerfasserIn]; Vahlbruch, Henning [VerfasserIn]; Schnabel, Roman [VerfasserIn]

Continuous-wave squeezed states of light via ‘up-down’ self-phase modulation - [published Version]

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  • Medientyp: Sonstige Veröffentlichung; E-Artikel
  • Titel: Continuous-wave squeezed states of light via ‘up-down’ self-phase modulation
  • Beteiligte: Singh, Amrit Pal [VerfasserIn]; Ast, Stefan [VerfasserIn]; Mehmet, Moritz [VerfasserIn]; Vahlbruch, Henning [VerfasserIn]; Schnabel, Roman [VerfasserIn]
  • Erschienen: Washington, DC : OSA - The Optical Society, 2019
  • Erschienen in: Optics Express 27 (2019), Nr. 16
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/10436; https://doi.org/10.1364/OE.27.022408
  • ISSN: 1094-4087
  • Schlagwörter: Noise abatement ; Optical frequency ; Self phase modulation ; Chip integration ; Light sources ; Balanced homodyne detection ; Continuous waves ; Nonlinear crystals ; Sideband frequency ; Optical frequency conversion ; Continuous Wave ; Parametric down conversion
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  • Beschreibung: Continuous-wave (cw) squeezed states of light have applications in sensing, metrology and secure communication. In recent decades their efficient generation has been based on parametric down-conversion, which requires pumping by externally generated pump light of twice the optical frequency. Currently, there is immense effort in miniaturizing squeezed-light sources for chip-integration. Designs that require just a single input wavelength are favored since they offer an easier realization. Here we report the first observation of cw squeezed states generated by self-phase modulation caused by subsequent up and down conversions. The wavelengths of input light and of balanced homodyne detection are identical, and 1550 nm in our case. At sideband frequencies around 1.075 GHz, a nonclassical noise reduction of (2.4 ± 0.1) dB is observed. The setup uses a second-order nonlinear crystal, but no externally generated light of twice the frequency. Our experiment is not miniaturized, but might open a route towards simplified chip-integrated realizations. © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
  • Zugangsstatus: Freier Zugang