Quantum delayed "choice" based on vectorially structured photon
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arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866929619906592768 |
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| author | Yang, Ye Zhang, Shuya Zhou, Yongkun Zeng, Xinji Ren, Kaixuan Wei, Dong Wang, Chengyuan Chen, Yun Gao, Hong Li, Fuli |
| author_facet | Yang, Ye Zhang, Shuya Zhou, Yongkun Zeng, Xinji Ren, Kaixuan Wei, Dong Wang, Chengyuan Chen, Yun Gao, Hong Li, Fuli |
| contents | Whether a photon exhibits wavelike or particlelike behaviour depends on the observation method, as clearly demonstrated by Wheeler's delayed choice (DC) experiments. A key aspect of such experiments is the random determination of the observation device's status, typically controlled by a random number generator or a quantum-controlling apparatus. Here, we propose a novel version of the quantum delayed choice (QDC) experiment by tailoring the quantum state of the single photon into an arbitrary polarization superposition. In this experiment, the "choice" can be considered as being made by the photon's state itself at the moment of observation, thereby violating classical causality. Additionally, we observe the morphing behaviour of the single photon between wavelike and particlelike characteristics, which challenges the classical picture of waves and particles. Utilizing the quantum state of the photon rather than the quantum-controlling devices not only facilitates the implementation of the QDC experiment but also helps deepen the understanding of Bohr's complementarity principle. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_05847 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum delayed "choice" based on vectorially structured photon Yang, Ye Zhang, Shuya Zhou, Yongkun Zeng, Xinji Ren, Kaixuan Wei, Dong Wang, Chengyuan Chen, Yun Gao, Hong Li, Fuli Quantum Physics Optics Whether a photon exhibits wavelike or particlelike behaviour depends on the observation method, as clearly demonstrated by Wheeler's delayed choice (DC) experiments. A key aspect of such experiments is the random determination of the observation device's status, typically controlled by a random number generator or a quantum-controlling apparatus. Here, we propose a novel version of the quantum delayed choice (QDC) experiment by tailoring the quantum state of the single photon into an arbitrary polarization superposition. In this experiment, the "choice" can be considered as being made by the photon's state itself at the moment of observation, thereby violating classical causality. Additionally, we observe the morphing behaviour of the single photon between wavelike and particlelike characteristics, which challenges the classical picture of waves and particles. Utilizing the quantum state of the photon rather than the quantum-controlling devices not only facilitates the implementation of the QDC experiment but also helps deepen the understanding of Bohr's complementarity principle. |
| title | Quantum delayed "choice" based on vectorially structured photon |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2412.05847 |