Quantum parallelism of the controlled-NOT operation : An experimental criterion for the evaluation of device performance
Physical Review A. Atomic, Molecular, and Optical Physics 72 巻 2 号
022329-1-022329-5 頁
2005-08-19 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Quantum parallelism of the controlled-NOT operation : An experimental criterion for the evaluation of device performance
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| 作成者 | |
| 収録物名 |
Physical Review A. Atomic, Molecular, and Optical Physics
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| 巻 | 72 |
| 号 | 2 |
| 開始ページ | 022329-1 |
| 終了ページ | 022329-5 |
| 抄録 |
It is shown that a quantum controlled-NOT gate simultaneously performs the logical functions of three distinct conditional local operations. Each of these local operations can be verified by measuring a corresponding truth table of four local inputs and four local outputs. The quantum parallelism of the gate can then be observed directly in a set of three simple experimental tests, each of which has a clear intuitive interpretation in terms of classical logical operations. Specifically, quantum parallelism is achieved if the average fidelity of the three classical operations exceeds 2/3. It is thus possible to evaluate the essential quantum parallelism of an experimental controlled-NOT gate by testing only three characteristic classical operations performed by the gate.
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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 | 2005-08-19 |
| 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] 1094-1622
[DOI] 10.1103/PhysRevA.72.022329
[NCID] AA10764867
[DOI] http://dx.doi.org/10.1103/PhysRevA.72.022329
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