Information and noise in quantum measurement
Physical Review A. Atomic, Molecular, and Optical Physics 62 巻 2 号
022103-1-022103-9 頁
2000-07-06 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Information and noise in quantum measurement
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| 作成者 | |
| 収録物名 |
Physical Review A. Atomic, Molecular, and Optical Physics
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| 巻 | 62 |
| 号 | 2 |
| 開始ページ | 022103-1 |
| 終了ページ | 022103-9 |
| 抄録 |
Even though measurement results obtained in the real world are generally both noisy and continuous, quantum measurement theory tends to emphasize the ideal limit of perfect precision and quantized measurement results. In this article, a more general concept of noisy measurements is applied to investigate the role of quantum noise in the measurement process. In particular, it is shown that the effects of quantum noise can be separated from the effects of information obtained in the measurement. However, quantum noise is required to "cover up" negative probabilities arising as the quantum limit is approached. These negative probabilities represent fundamental quantum-mechanical correlations between the measured variable and the variables affected by quantum noise.
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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 | 2000-07-06 |
| 権利情報 |
Copyright (c) 2000 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.62.022103
[NCID] AA10764867
[DOI] http://dx.doi.org/10.1103/PhysRevA.62.022103
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