We experimentally generate twin beams through cascaded quadratic processes in a nonlinear χ(2) crystal, leading to an internally pumped optical parametric oscillation, in a doubly resonant second-harmonic generation system. The exploration of the non-classical properties of these beams enabled the observation of up to 5 dB of noise reduction in their intensity difference below the standard quantum limit.
Quantum correlated twin beams in cascaded optical parametric oscillator
Castrignano, Salvatore;Ricciardi, Iolanda;Maddaloni, Pasquale;De Natale, Paolo;Wabnitz, Stefan;De Rosa, Maurizio
2024
Abstract
We experimentally generate twin beams through cascaded quadratic processes in a nonlinear χ(2) crystal, leading to an internally pumped optical parametric oscillation, in a doubly resonant second-harmonic generation system. The exploration of the non-classical properties of these beams enabled the observation of up to 5 dB of noise reduction in their intensity difference below the standard quantum limit.File in questo prodotto:
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Castrignano Photonics Europe 2024.pdf
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