Improving the Rate-Loss Scaling in Polarization Entanglement Distribution using Single-Click Entanglement Swapping
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915436507955200 |
|---|---|
| author | Shimizu, Hikaru Yoshimoto, Joe Ichii, Daiki Ishi-Hayase, Junko Ikuta, Rikizo Takeoka, Masahiro |
| author_facet | Shimizu, Hikaru Yoshimoto, Joe Ichii, Daiki Ishi-Hayase, Junko Ikuta, Rikizo Takeoka, Masahiro |
| contents | Polarization entanglement is widely used in optical quantum information processing due to its compatibility with standard optical components. On the other hand, it is known that polarization entanglement is susceptible to the loss, more precisely, its transmission rate in a lossy channel is limited by the scaling of O(η), where η is a transmittance of the channel. Here, we experimentally demonstrate that this rate-loss scaling limit can be overcome by a relatively simple protocol. This is possible by integrating the idea of the polarizaion-photon-number hybrid entanglement and the single-click entanglement swapping. We demonstrate square root improvement of the rate-loss scaling from the conventional approaches and achieve the fidelity of 0.843 for the distributed polarization entangled photon pairs. This improvement in the rate-loss scaling is equivalent to that achieved by 1-hop quantum repeater node. Our result paves a way to build a near-future quantum network and its applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_14836 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Improving the Rate-Loss Scaling in Polarization Entanglement Distribution using Single-Click Entanglement Swapping Shimizu, Hikaru Yoshimoto, Joe Ichii, Daiki Ishi-Hayase, Junko Ikuta, Rikizo Takeoka, Masahiro Quantum Physics Polarization entanglement is widely used in optical quantum information processing due to its compatibility with standard optical components. On the other hand, it is known that polarization entanglement is susceptible to the loss, more precisely, its transmission rate in a lossy channel is limited by the scaling of O(η), where η is a transmittance of the channel. Here, we experimentally demonstrate that this rate-loss scaling limit can be overcome by a relatively simple protocol. This is possible by integrating the idea of the polarizaion-photon-number hybrid entanglement and the single-click entanglement swapping. We demonstrate square root improvement of the rate-loss scaling from the conventional approaches and achieve the fidelity of 0.843 for the distributed polarization entangled photon pairs. This improvement in the rate-loss scaling is equivalent to that achieved by 1-hop quantum repeater node. Our result paves a way to build a near-future quantum network and its applications. |
| title | Improving the Rate-Loss Scaling in Polarization Entanglement Distribution using Single-Click Entanglement Swapping |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.14836 |