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A framework for measuring weak values without weak interactions and its diagrammatic representation
This item is licensed under:Creative Commons Attribution 3.0 Unported
| Title: | A framework for measuring weak values without weak interactions and its diagrammatic representation |
| Authors: | Ogawa, Kazuhisa Browse this author | | Yasuhiko, Osamu Browse this author | | Kobayashi, Hirokazu Browse this author | | Nakanishi, Toshihiro Browse this author →KAKEN DB | | Tomita, Akihisa Browse this author →KAKEN DB |
| Keywords: | weak value | | weak measurement | | direct measurement of wavefunctions |
| Issue Date: | 10-Apr-2019 |
| Publisher: | IOP Publishing |
| Journal Title: | New Journal of Physics |
| Volume: | 21 |
| Start Page: | 043013 |
| Publisher DOI: | 10.1088/1367-2630/ab0773 |
| Abstract: | Weak values are typically obtained experimentally by performing weak measurements, which involve weak interactions between the measured system and a probe. However, the determination of weak values does not necessarily require weak measurements, and several methods without weak system-probe interactions have been developed previously. In this work, a framework for measuring weak values is proposed to describe the relationship between various weak value measurement techniques in a unified manner. This framework, which uses a probe-controlled system transformation instead of the weak system-probe interaction, improves the understanding of the currently used weak value measurement methods. Furthermore, a diagrammatic representation of the proposed framework is introduced to intuitively identify the complex values obtained in each measurement system. By using this diagram, a new method for measuring weak values with a desired function can be systematically derived. As an example, a scan-free and more efficient direct measurement method of wavefunctions than the conventional techniques using weak measurements is developed. |
| Rights: | http://creativecommons.org/licenses/by/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/74166 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 小川 和久
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