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Demonstration of an Optical Quantum Controlled-NOT Gate without Path Interference

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タイトル: Demonstration of an Optical Quantum Controlled-NOT Gate without Path Interference
著者: Okamoto, Ryo 著作を一覧する
Hofmann, Holger F. 著作を一覧する
Takeuchi, Shigeki 著作を一覧する
Sasaki, Keiji 著作を一覧する
発行日: 2005年11月18日
出版者: American Physical Society
誌名: Physical Review Letters
巻: 95
開始ページ: 210506
出版社 DOI: 10.1103/PhysRevLett.95.210506
PMID: 16384126
抄録: We report the first experimental demonstration of an optical quantum controlled-NOT gate without any path interference, where the two interacting path interferometers of the original proposals [Phys. Rev. A 66, 024308 (2002); 65, 062324 (2002)] have been replaced by three partially polarizing beam splitters with suitable polarization dependent transmittances and reflectances. The performance of the device is evaluated using a recently proposed method [Phys. Rev. Lett. 94, 160504 (2005)], by which the quantum process fidelity and the entanglement capability can be estimated from the 32 measurement results of two classical truth tables, significantly less than the 256 measurement results required for full quantum tomography.
Rights: Copyright © 2005 American Physical Society
Relation (URI):
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 竹内 繁樹


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