Entangled photon triplets using lithium niobate nanophotonics
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911359907659776 |
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| author | Harper, Nathan A. Sengupta, Ayantika Hwang, Emily Y. Cushing, Scott K. |
| author_facet | Harper, Nathan A. Sengupta, Ayantika Hwang, Emily Y. Cushing, Scott K. |
| contents | Multiphoton states are needed for quantum communication and computation. Multiphoton states are significantly more difficult to generate than one- and two-photon states because two individual down-conversion processes must be cascaded. Only efficiencies of $<100$ Hz/mW have been reported to date. We integrate two down-converters on the same thin-film lithium niobate waveguide, significantly enhancing the cascaded process efficiency to $237 \pm 36$ kHz/mW. The measured $4.4 \times 10^{-5}$ probability of the second down-converter, which sets the limit on detectable triplet rates, exceeds those of previous triplet sources by an order of magnitude and demonstrates a path towards MHz rates of triplets for quantum applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_24053 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Entangled photon triplets using lithium niobate nanophotonics Harper, Nathan A. Sengupta, Ayantika Hwang, Emily Y. Cushing, Scott K. Quantum Physics Multiphoton states are needed for quantum communication and computation. Multiphoton states are significantly more difficult to generate than one- and two-photon states because two individual down-conversion processes must be cascaded. Only efficiencies of $<100$ Hz/mW have been reported to date. We integrate two down-converters on the same thin-film lithium niobate waveguide, significantly enhancing the cascaded process efficiency to $237 \pm 36$ kHz/mW. The measured $4.4 \times 10^{-5}$ probability of the second down-converter, which sets the limit on detectable triplet rates, exceeds those of previous triplet sources by an order of magnitude and demonstrates a path towards MHz rates of triplets for quantum applications. |
| title | Entangled photon triplets using lithium niobate nanophotonics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.24053 |