Automated discovery of high-dimensional multipartite entanglement with photons that never interacted
- URL: http://arxiv.org/abs/2510.10707v1
- Date: Sun, 12 Oct 2025 17:14:48 GMT
- Title: Automated discovery of high-dimensional multipartite entanglement with photons that never interacted
- Authors: Sören Arlt, Mario Krenn, Xuemei Gu,
- Abstract summary: Quantum entanglement across spatially separated network nodes is established through the distribution of photons from a common source or via entanglement swapping.<n>We show that Path identity, where the emission origins of photons from different sources are made indistinguishable, offers an alternative route.<n>We show that this mechanism enables complex multipartite, high-dimensional, and even logical entanglement between remote nodes whose photons never interacted.
- Score: 0.19116784879310023
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum entanglement across spatially separated network nodes is conventionally established through the distribution of photons from a common source or via entanglement swapping that relies on Bell-state measurements and pre-shared entanglement. Path identity, where the emission origins of photons from different sources are made indistinguishable, offers an alternative route. We show that this mechanism enables complex multipartite, high-dimensional, and even logical entanglement between remote nodes whose photons never interacted. Our schemes require neither direct photon interaction, pre-shared entanglement, nor Bell-state measurements, highlighting a distinct resource for distributed quantum communication and computation. All of the solutions were discovered automatically using highly efficient computational design tools, indicating the potential for scientific inspiration from computational algorithms.
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