Conservation of angular momentum on a single-photon level
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866914385261232128 |
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| author | Kopf, Lea Barros, Rafael Prabhakar, Shashi Giese, Enno Fickler, Robert |
| author_facet | Kopf, Lea Barros, Rafael Prabhakar, Shashi Giese, Enno Fickler, Robert |
| contents | Identifying conservation laws is central to every subfield of physics, as they illuminate the underlying symmetries and fundamental principles. A prime example can be found in quantum optics: The conservation of orbital angular momentum (OAM) during spontaneous parametric down-conversion (SPDC) enables the generation of a photon pair with entangled OAM. In this article, we report on the first study of OAM conservation in SPDC pumped by single photons. Our results present the first implementation of cascaded down-conversion without waveguides, setting the stage for experiments on the direct generation of multi-photon high-dimensional entanglement using all degrees of freedom of light. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_09139 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Conservation of angular momentum on a single-photon level Kopf, Lea Barros, Rafael Prabhakar, Shashi Giese, Enno Fickler, Robert Quantum Physics Identifying conservation laws is central to every subfield of physics, as they illuminate the underlying symmetries and fundamental principles. A prime example can be found in quantum optics: The conservation of orbital angular momentum (OAM) during spontaneous parametric down-conversion (SPDC) enables the generation of a photon pair with entangled OAM. In this article, we report on the first study of OAM conservation in SPDC pumped by single photons. Our results present the first implementation of cascaded down-conversion without waveguides, setting the stage for experiments on the direct generation of multi-photon high-dimensional entanglement using all degrees of freedom of light. |
| title | Conservation of angular momentum on a single-photon level |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2409.09139 |