Passive quantum interconnects: multiplexed remote entanglement generation with cavity-assisted photon scattering
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912980988329984 |
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| author | Kikura, Seigo Tanji, Kazufumi Goban, Akihisa Sunami, Shinichi |
| author_facet | Kikura, Seigo Tanji, Kazufumi Goban, Akihisa Sunami, Shinichi |
| contents | We propose a time- and wavelength-multiplexed remote atom-atom entanglement generation protocol based on cavity-assisted photon scattering (CAPS). This is designed to achieve a high rate and high fidelity with robustness to operational imperfections, parameter fluctuations, and auxiliary time costs, such as percent-level photon impurity, timing and cavity parameter jitter, and atom shuttling time costs. We benchmark this protocol using comprehensive analytical and numerical modeling of the atom-cavity dynamics, including state-dependent pulse delay effects, photon temporal impurity, atom-cavity system parameter fluctuations, and crosstalk among atoms through a shared cavity mode. With realistic atom-cavity system performance, we predict $2\times 10^{5}\,\mathrm{s}^{-1}$ successful atom-atom Bell pair generation even without in-cavity qubit reset, substantially enhanced from two-photon interference based protocols, at a predicted Bell pair fidelity of 0.999. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01229 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Passive quantum interconnects: multiplexed remote entanglement generation with cavity-assisted photon scattering Kikura, Seigo Tanji, Kazufumi Goban, Akihisa Sunami, Shinichi Quantum Physics Quantum Gases Atomic Physics We propose a time- and wavelength-multiplexed remote atom-atom entanglement generation protocol based on cavity-assisted photon scattering (CAPS). This is designed to achieve a high rate and high fidelity with robustness to operational imperfections, parameter fluctuations, and auxiliary time costs, such as percent-level photon impurity, timing and cavity parameter jitter, and atom shuttling time costs. We benchmark this protocol using comprehensive analytical and numerical modeling of the atom-cavity dynamics, including state-dependent pulse delay effects, photon temporal impurity, atom-cavity system parameter fluctuations, and crosstalk among atoms through a shared cavity mode. With realistic atom-cavity system performance, we predict $2\times 10^{5}\,\mathrm{s}^{-1}$ successful atom-atom Bell pair generation even without in-cavity qubit reset, substantially enhanced from two-photon interference based protocols, at a predicted Bell pair fidelity of 0.999. |
| title | Passive quantum interconnects: multiplexed remote entanglement generation with cavity-assisted photon scattering |
| topic | Quantum Physics Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2507.01229 |