Certifying position-momentum entanglement at telecommunication wavelengths
| العنوان: | Certifying position-momentum entanglement at telecommunication wavelengths |
|---|---|
| المؤلفون: | Lukas Achatz, Evelyn A Ortega, Krishna Dovzhik, Rodrigo F Shiozaki, Jorge Fuenzalida, Sören Wengerowsky, Martin Bohmann, Rupert Ursin |
| المساهمون: | Publica |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Quantum Physics, SPDC source, position-momentum entanglement, FOS: Physical sciences, EPR Entanglement, continuous-variable entanglement, Quantum Physics (quant-ph), Condensed Matter Physics, Mathematical Physics, Atomic and Molecular Physics, and Optics, Optics (physics.optics), Physics - Optics |
| الوصف: | TheThe successful employment of high-dimensional quantum correlations and its integration in telecommunication infrastructures is vital in cutting-edge quantum technologies for increasing robustness and key generation rate. Position-momentum Einstein-Podolsky-Rosen (EPR) entanglement of photon pairs are a promising resource of such high-dimensional quantum correlations. Here, we experimentally certify EPR correlations of photon pairs generated by spontaneous parametric down-conversion (SPDC) in a nonlinear crystal with type-0 phase-matching at telecommunication wavelength for the first time. To experimentally observe EPR entanglement, we perform scanning measurements in the near- and far-field planes of the signal and idler modes. We certify EPR correlations with high statistical significance of up to 45 standard deviations. Furthermore, we determine the entanglement of formation of our source to be greater than one, indicating a dimensionality of greater than 2. Operating at telecommunication wavelengths around 1550 nm, our source is compatible with today's deployed telecommunication infrastructure, thus paving the way for integrating sources of high-dimensional entanglement into quantum-communication infrastructures. Close to published version |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b862ba5e6616df3ac6914c7e4e098b1a https://publica.fraunhofer.de/handle/publica/425417 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b862ba5e6616df3ac6914c7e4e098b1a |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |