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Characterization of two-photon polarization mixed states generated from entangled-classical hybrid photon source
| Title: | Characterization of two-photon polarization mixed states generated from entangled-classical hybrid photon source |
| Authors: | Kumano, H. Browse this author | | Matsuda, K. Browse this author | | Ekuni, S. Browse this author | | Sasakura, H. Browse this author | | Suemune, I. Browse this author |
| Issue Date: | 18-Jul-2011 |
| Publisher: | Optical Society of America |
| Journal Title: | Optics Express |
| Volume: | 19 |
| Issue: | 15 |
| Start Page: | 14249 |
| End Page: | 14259 |
| Publisher DOI: | 10.1364/OE.19.014249 |
| PMID: | 21934789 |
| Abstract: | 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. |
| Rights: | © 2011 Optical Society of America |
| Type: | article |
| URI: | http://hdl.handle.net/2115/46906 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 熊野 英和
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