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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.10501 |
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| _version_ | 1866909205852585984 |
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| author | You, Bingran Wu, Qiming Miron, David Ke, Wenjun Monga, Inder Saglamyurek, Erhan Haeffner, Hartmut |
| author_facet | You, Bingran Wu, Qiming Miron, David Ke, Wenjun Monga, Inder Saglamyurek, Erhan Haeffner, Hartmut |
| contents | High-rate remote entanglement between photon and matter-based qubits is essential for distributed quantum information processing. A key technique to increase the modest entangling rates of existing long-distance quantum networking approaches is multiplexing. Here, we demonstrate a temporally multiplexed ion-photon interface via rapid transport of a chain of nine calcium ions across 74 $\mathrm{μm}$ within 86 $\mathrm{μs}$. The non-classical nature of the multiplexed photons is verified by measuring the second-order correlation function with an average value of $g^{(2)}(0)$ = 0.060(13), indicating negligible crosstalk between the multiplexed modes. In addition, we characterize the motional degree-of-freedom of the ion crystal after transport and find that it is coherently excited to as much as $\bar{n}_α\approx 110$ for the center-of-mass mode. Our proof-of-principle implementation paves the way for large-scale quantum networking with trapped ions, but highlights some challenges that must be overcome. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_10501 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Temporally multiplexed ion-photon quantum interface via fast ion-chain transport You, Bingran Wu, Qiming Miron, David Ke, Wenjun Monga, Inder Saglamyurek, Erhan Haeffner, Hartmut Quantum Physics Atomic Physics High-rate remote entanglement between photon and matter-based qubits is essential for distributed quantum information processing. A key technique to increase the modest entangling rates of existing long-distance quantum networking approaches is multiplexing. Here, we demonstrate a temporally multiplexed ion-photon interface via rapid transport of a chain of nine calcium ions across 74 $\mathrm{μm}$ within 86 $\mathrm{μs}$. The non-classical nature of the multiplexed photons is verified by measuring the second-order correlation function with an average value of $g^{(2)}(0)$ = 0.060(13), indicating negligible crosstalk between the multiplexed modes. In addition, we characterize the motional degree-of-freedom of the ion crystal after transport and find that it is coherently excited to as much as $\bar{n}_α\approx 110$ for the center-of-mass mode. Our proof-of-principle implementation paves the way for large-scale quantum networking with trapped ions, but highlights some challenges that must be overcome. |
| title | Temporally multiplexed ion-photon quantum interface via fast ion-chain transport |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2405.10501 |