Characterization of two-photon polarization mixed states generated from entangled-classical hybrid photon source

• Kumano, H.

• Matsuda, K.

• Ekuni, S.

• Sasakura, H.

• Suemune, I.

抄録

We experimentally prepare bi-photon mixed states in polarization employing an entangled-classical hybrid photon emitter which can properly model solid-state entangled photon sources with uncorrelated background photons. Polarization-uncorrelated photon pairs in totally mixed (TM) states are embodied with classical thermal radiation, while the polarization-entangled ones in a Bell state are generated by conventional parametric down conversion. The bi-photon states generated from the hybrid photon emitter are characterized in terms of a linear entropy-tangle plane, which reveals the formation of two-qubit Werner states. We also propose a direct way for evaluating the Werner states by means of minimal coincidence counts measurements. This simple method can be widely applicable in examining the bi-photon states from solid-state entangled photon sources, in which the polarization-entangled photon pairs have temporal correlation while the background photons in the TM states do not.

収録刊行物

• Optics Express

  Optics Express 19 (15), 14249-14259, 2011-07-18

  Optical Society of America

詳細情報

• CRID: 1050845763938575360
• NII論文ID: 120003225994
• HANDLE: 2115/46906
• ISSN: 10944087
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles