2009年9月
Geometrical aspects of weak measurements and quantum erasers
NEW JOURNAL OF PHYSICS
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- 巻
- 11
- 号
- 開始ページ
- 093025(1)
- 終了ページ
- 093025(11)
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1088/1367-2630/11/9/093025
- 出版者・発行元
- IOP PUBLISHING LTD
We investigate the mechanism of weak measurement by using an interferometric framework. In order to appropriately elucidate the interference effect that occurs in weak measurement, we introduce an interferometer for particles with internal degrees of freedom. It serves as a framework common to quantum eraser and weak measurement. We demonstrate that the geometric phase, particularly the Pancharatnam phase, results from the post-selection of the internal state, and thereby the interference pattern is changed. It is revealed that the extraordinary displacement of the probe wavepackets in weak measurement is achieved owing to the Pancharatnam phase associated with post-selection.
- リンク情報
- ID情報
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- DOI : 10.1088/1367-2630/11/9/093025
- ISSN : 1367-2630
- Web of Science ID : WOS:000270276900003