Distinguishing genuine entangled two-photon-polarization states from independently generated pairs of entangled photons
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概要
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２光子状態は、２つの光子の波動関数が時空間的に完全に重なりあった状態で、単純に光子が２つある状態とは異なります。たとえば、その偏光状態は、単純に考えた場合の２×２＝４ではなく、３つに限られます。今回の研究は、その２つの光子状態間のもつれ合いの生成を、単純な「２つのもつれ合い光子対」から区別して検証した世界初の成果です。今後の、多粒子状態間の量子相関の実験的な研究への先駆けになる物と期待されます。A scheme to distinguish entangled two-photon-polarization (ETP) states from two independent entangled one-photon-polarization (EOP) states is proposed. Using this scheme, the experimental generation of ETP by parametric down-conversion is confirmed through the anticorrelations among three orthogonal two-photon-polarization states. The estimated fraction of ETP among the correlated photon pairs is 37% in the present experimental setup.
- American Physical Societyの論文
- 2004-04-16
American Physical Society | 論文
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