A heralded quantum amplifier of multi-photon states
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_ | 1866913848143904768 |
|---|---|
| author | Villegas-Aguilar, Luis Ghafari, Farzad Winnel, Matthew S. Verma, Varun B. Shalm, Lynden K. Ralph, Timothy C. Pryde, Geoff J. Slussarenko, Sergei |
| author_facet | Villegas-Aguilar, Luis Ghafari, Farzad Winnel, Matthew S. Verma, Varun B. Shalm, Lynden K. Ralph, Timothy C. Pryde, Geoff J. Slussarenko, Sergei |
| contents | Large-scale quantum networking systems will inevitably require methods to overcome photon loss. While the no-cloning theorem forbids perfect and deterministic amplification of unknown quantum states, probabilistic heralded amplification schemes offer a viable path forward. Yet, for over a decade, successful multi-photon state amplification has remained out of reach, despite the fundamental importance of such states in achieving quantum advantage in optical applications. Here, we experimentally demonstrate a high-fidelity and post-selection-free amplifier for multi-photon states. We achieve heralded amplification of states with up to two photons in a single optical mode, with over a hundredfold intensity gain, and verify the coherence-preserving operation of our scheme. Our approach is scalable to higher photon numbers and enables noiseless amplification of complex multi-photon quantum states, with applications in large-scale quantum communication systems, distributed quantum metrology, and information processing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_13992 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A heralded quantum amplifier of multi-photon states Villegas-Aguilar, Luis Ghafari, Farzad Winnel, Matthew S. Verma, Varun B. Shalm, Lynden K. Ralph, Timothy C. Pryde, Geoff J. Slussarenko, Sergei Quantum Physics Optics Large-scale quantum networking systems will inevitably require methods to overcome photon loss. While the no-cloning theorem forbids perfect and deterministic amplification of unknown quantum states, probabilistic heralded amplification schemes offer a viable path forward. Yet, for over a decade, successful multi-photon state amplification has remained out of reach, despite the fundamental importance of such states in achieving quantum advantage in optical applications. Here, we experimentally demonstrate a high-fidelity and post-selection-free amplifier for multi-photon states. We achieve heralded amplification of states with up to two photons in a single optical mode, with over a hundredfold intensity gain, and verify the coherence-preserving operation of our scheme. Our approach is scalable to higher photon numbers and enables noiseless amplification of complex multi-photon quantum states, with applications in large-scale quantum communication systems, distributed quantum metrology, and information processing. |
| title | A heralded quantum amplifier of multi-photon states |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2505.13992 |