Demonstration of an Optical Quantum Controlled-NOT Gate without Path Interference
Physical Review Letters 95 巻 21 号
210506-1-210506-4 頁
2005-11-18 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Demonstration of an Optical Quantum Controlled-NOT Gate without Path Interference
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| 作成者 |
Okamoto Ryo
Takeuchi Shigeki
Sasaki Keiji
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| 収録物名 |
Physical Review Letters
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| 巻 | 95 |
| 号 | 21 |
| 開始ページ | 210506-1 |
| 終了ページ | 210506-4 |
| 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 A 66, 024308 (2002); 65, 062324 (2002)] have been replaced by three partially polarizing beam splitters with suitable polarization dependent transmittances and reflectances.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.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2005-11-18 |
| 権利情報 |
Copyright (c) 2005 American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.95.210506
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.95.210506
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