Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Generation of Bell states in a Hong-Ou-Mandel interferometer

Hong-Ou-Mandel 간섭계를 이용한 Bell 상태

  • Published : 2007.02.25
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Abstract

Bell states have been investigated in a Hong-Ou-Mandel interferometer using photon pairs from a type-1 SPDC. The four kinds of the Bell states, $|{\Psi}^+>,|{\Psi}^->,|{\Phi}^+>,|{\Phi}^->$ are created by placing 2 HWPs, 2 QWPs at outputs of the interferometer. They show an average visibility of 77% in the coincidence measurement.

제 1형의 매개하향변환에서 발생하는 광자쌍과 Hong-Ou-Mandel 간섭계를 이용하여 편광-얽힘 상태의 광자쌍을 선택적으로 발생시키고, 반파장판과 4분파장판을 조합하여 4개의 Bell 상태 $|{\Psi}^{\pm}>,|{\Phi}^{\pm}>$를 구현하였다. 동시계수 측정에 의한 각 상태의 평균 선명도는 77%이다.

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References

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