Generation of hyperentangled photon pairs in the time and frequency domain on a silicon photonic chip
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| author | Congia, Sara Borghi, Massimo Brusaschi, Emanuele Sabattoli, Federico Andrea Dirani, Houssein El Youssef, Laurene Pargon, Erwine Sciancalepore, Corrado Liscidini, Marco Rothman, Johan Olivier, Ségolène Galli, Matteo Bajoni, Daniele |
| author_facet | Congia, Sara Borghi, Massimo Brusaschi, Emanuele Sabattoli, Federico Andrea Dirani, Houssein El Youssef, Laurene Pargon, Erwine Sciancalepore, Corrado Liscidini, Marco Rothman, Johan Olivier, Ségolène Galli, Matteo Bajoni, Daniele |
| contents | Multi-dimensional entangled photon states represent an important resource in quantum communication networks. Specifically, hyperentangled states presenting simultaneous entanglement in several degrees of freedom (DoF), stand out for their noise resilience and information capacity. In this work, we demonstrate the generation of hyperentangled photon pairs in the time and frequency-bin domain by spontaneous four-wave mixing from the coherent driving of two integrated Silicon microresonators. We demonstrate entanglement in each DoF by proving the violation of the Clauser Horne Shimony Holt (CHSH) inequality by more than 27 standard deviations (STDs) in each reduced space. Genuine hyperentanglement is then assessed from the negativity of an hyperentanglement witness, which is verified by more than 60 STDs. These results mark, to the best of our knowledge, the first demonstration of time-frequency bin hyperentanglement in an integrated silicon photonic device. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_19110 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Generation of hyperentangled photon pairs in the time and frequency domain on a silicon photonic chip Congia, Sara Borghi, Massimo Brusaschi, Emanuele Sabattoli, Federico Andrea Dirani, Houssein El Youssef, Laurene Pargon, Erwine Sciancalepore, Corrado Liscidini, Marco Rothman, Johan Olivier, Ségolène Galli, Matteo Bajoni, Daniele Quantum Physics Multi-dimensional entangled photon states represent an important resource in quantum communication networks. Specifically, hyperentangled states presenting simultaneous entanglement in several degrees of freedom (DoF), stand out for their noise resilience and information capacity. In this work, we demonstrate the generation of hyperentangled photon pairs in the time and frequency-bin domain by spontaneous four-wave mixing from the coherent driving of two integrated Silicon microresonators. We demonstrate entanglement in each DoF by proving the violation of the Clauser Horne Shimony Holt (CHSH) inequality by more than 27 standard deviations (STDs) in each reduced space. Genuine hyperentanglement is then assessed from the negativity of an hyperentanglement witness, which is verified by more than 60 STDs. These results mark, to the best of our knowledge, the first demonstration of time-frequency bin hyperentanglement in an integrated silicon photonic device. |
| title | Generation of hyperentangled photon pairs in the time and frequency domain on a silicon photonic chip |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2506.19110 |