Uncertainty characteristics of generalized quantum measurements
Physical Review A. Atomic, Molecular, and Optical Physics 67 巻 2 号
022106-1-022106-7 頁
2003-02-13 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Uncertainty characteristics of generalized quantum measurements
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| 作成者 | |
| 収録物名 |
Physical Review A. Atomic, Molecular, and Optical Physics
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| 巻 | 67 |
| 号 | 2 |
| 開始ページ | 022106-1 |
| 終了ページ | 022106-7 |
| 抄録 |
The effects of any quantum measurement can be described by a collection of measurement operators {Mˆ m} acting on the quantum state of the measured system. However, the Hilbert space formalism tends to obscure the relationship between the measurement results and the physical properties of the measured system. In this paper, a characterization of measurement operators in terms of measurement resolution and disturbance is developed. It is then possible to formulate uncertainty relations for the measurement process that are valid for arbitrary input states. The motivation of these concepts is explained from a quantum communication viewpoint. It is shown that the intuitive interpretation of uncertainty as a relation between measurement resolution and disturbance provides a valid description of measurement back action. Possible applications to quantum cryptography, quantum cloning, and teleportation are discussed.
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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 | 2003-02-13 |
| 権利情報 |
Copyright (c) 2003 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.67.022106
[NCID] AA10764867
[DOI] http://dx.doi.org/10.1103/PhysRevA.67.022106
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