最近の量子光学の進展　　セミモノリシック型光パラメトリック発振器によるブライトスクイーズド光と量子相関光子対ビームの発生

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タイトル別名
  • Recent Progress in Quantum Optics. Generation of Bright Squeezed Light and Quantum-Correlated Twin Photon Beams Using a Semimonolithic Optical Parametric Oscillator.
  • レーザーオリジナル セミモノリシックガタ ヒカリ パラメトリック ハッシンキ ニ ヨル ブライトスクイーズド ヒカリ ト リョウシ ソウカン コウシツイ ビーム ノ ハッセイ

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We have generated bright squeezed light and quantum-correlated twin photon beams by using a cw semimonolithic KTP Optical Parametric Oscillator (OPO), which exhibits a low oscillation threshold and is capable of oscillating even in the free-running (no external-feedback) condition. The pump beam reflected by the OPO, after a cascading nonlinearity process in the crystal, appears as bright squeezed light. The squeezing observed on the reflected pump beam from the semimonolithic OPO was 30% (inferred squeezing: 48%). The signal and idler beams generated by the optical parametric oscillator are highly quantum-correlated twin photon beams. Since the squeezing property of the intensity difference between the twin photonbeams is robust in the condition where the two fields are balanced, the squeezing can be observed even in the freerunning condition of the OPO. This intensity-difference squeezing observed between the twin photon beams from the free-running semimonolithic OPO was 70% (inferred squeezing: 87%).

収録刊行物

  • レーザー研究

    レーザー研究 28 (10), 690-694, 2000

    一般社団法人 レーザー学会

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