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Complementarity and quantum erasure in two simple which-path detection systems

Authors
Hong, Suc-KyoungNam, Seog WooYeon, Kyu-Hwang
Issue Date
Apr-2008
Publisher
KOREAN PHYSICAL SOC
Keywords
complementarity; quantum eraser; which-path information
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.52, no.4, pp 975 - 979
Pages
5
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume
52
Number
4
Start Page
975
End Page
979
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123834
DOI
10.3938/jkps.52.975
ISSN
0374-4884
1976-8524
Abstract
We theoretically consider the complementarity in two "which-path" detection systems. The possibility of delayed choice via the action of quantum erasure in a system is considered with respect to the complementarity, as well. The first system considered is a Mach-Zehnder interferometer coupled with a side interferometer by using an optical Kerr media in a common arm which is used to get "which-path" information via a quantum nondemolition measurement of a signal photon. The second system is composed of a Mach-Zehnder interferometer coupled with a coincidence detection system in which a pair of generated biphotons travels and is incident on a two-level absorber for coincidence detection via a two-photon process. Both arms of the coincidence detector system include optical Kerr crystals, one of which is coupled with the Mach-Zehnder interferometer. In those interferometer systems, the loss of the "which-path" information causes a revival of the interference pattern as Wheeler and Scully supported in their delayed-choice experimental system and quantum erasure experimental system.
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College of Science and Technology > Department of Display and Semiconductor Physics > 1. Journal Articles
College of Science and Technology > Semiconductor Physics in Division of Display and Semiconductor Physics > 1. Journal Articles

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