Saturation of repeated quantum measurements

Erkka Haapasalo, Teiko Heinosaari, Yui Kuramochi

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

We study sequential measurement scenarios where the system is repeatedly subjected to the same measurement process. We first provide examples of such repeated measurements where further repetitions of the measurement do not increase our knowledge on the system after some finite number of measurement steps. We also prove, however, that repeating the Lüders measurement of an unsharp two-outcome observable never saturates in this sense, and we characterize the observable measured in the limit of infinitely many repetitions. Our result implies that a repeated measurement can be used to correct the inherent noise of an unsharp observable.

本文言語英語
論文番号33LT01
ジャーナルJournal of Physics A: Mathematical and Theoretical
49
33
DOI
出版ステータス出版済み - 7 8 2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • 統計物理学および非線形物理学
  • 統計学および確率
  • モデリングとシミュレーション
  • 数理物理学
  • 物理学および天文学(全般)

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