Certifying spatial entanglement between non-degenerate photon pairs with a camera
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866916907253235712 |
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| author | Brambila, Emma Guitter, Raphael Sondenheimer, René Gräfe, Markus Defienne, Hugo |
| author_facet | Brambila, Emma Guitter, Raphael Sondenheimer, René Gräfe, Markus Defienne, Hugo |
| contents | We investigate transverse spatial entanglement between photon pairs of different wavelengths using a camera-based coincidence technique. By adapting the correlation measurements to the photons frequencies, we certify the presence of entanglement between the pairs through violation of an Einstein-Podolsky-Rosen criterion. Additionally, we examine how parameters such as pump waist and crystal length influence these correlations. Our results highlight key differences from the frequency-degenerate case, showing that an adapted theoretical analysis is essential to avoid significant misestimations and to reliably certify entanglement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_14300 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Certifying spatial entanglement between non-degenerate photon pairs with a camera Brambila, Emma Guitter, Raphael Sondenheimer, René Gräfe, Markus Defienne, Hugo Quantum Physics Optics We investigate transverse spatial entanglement between photon pairs of different wavelengths using a camera-based coincidence technique. By adapting the correlation measurements to the photons frequencies, we certify the presence of entanglement between the pairs through violation of an Einstein-Podolsky-Rosen criterion. Additionally, we examine how parameters such as pump waist and crystal length influence these correlations. Our results highlight key differences from the frequency-degenerate case, showing that an adapted theoretical analysis is essential to avoid significant misestimations and to reliably certify entanglement. |
| title | Certifying spatial entanglement between non-degenerate photon pairs with a camera |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2506.14300 |