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Quantitative complementarity of wave-particle duality

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Title
Quantitative complementarity of wave-particle duality
Author(s)
Tai Hyun Yoon; Minhaeng Cho
Publication Date
2021-08
Journal
Science Advances, v.7, no.34
Publisher
American Association for the Advancement of Science
Abstract
© 2021 The Authors.To test the principle of complementarity and wave-particle duality quantitatively, we need a quantum composite system that can be controlled by experimental parameters. Here, we demonstrate that a double-path interferometer consisting of two parametric downconversion crystals seeded by coherent idler fields, where the generated coherent signal photons are used for quantum interference and the conjugate idler fields are used for which-path detectors with controllable fidelity, is useful for elucidating the quantitative complementarity. We show that the quanton source purity μs is tightly bounded by the entanglement E between the quantons and the remaining degrees of freedom by the relation μs = √ = 1 - E 2 , which is experimentally confirmed. We further prove that the experimental scheme using two stimulated parametric downconversion processes is an ideal tool for investigating and understanding wave-particle duality and Bohr's complementarity quantitatively.
URI
https://pr.ibs.re.kr/handle/8788114/10604
DOI
10.1126/sciadv.abi9268
ISSN
2375-2548
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > 1. Journal Papers (저널논문)
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