Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866910385220616192 |
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| author | Carter, Allison L. O'Reilly, Jameson Toh, George Saha, Sagnik Shalaev, Mikhail Goetting, Isabella Monroe, Christopher |
| author_facet | Carter, Allison L. O'Reilly, Jameson Toh, George Saha, Sagnik Shalaev, Mikhail Goetting, Isabella Monroe, Christopher |
| contents | Photonic interconnects between quantum systems will play a central role in both scalable quantum computing and quantum networking. Entanglement of remote qubits via photons has been demonstrated in many platforms; however, improving the rate of entanglement generation will be instrumental for integrating photonic links into modular quantum computers. We present an ion trap system that has the highest reported free-space photon collection efficiency for quantum networking. We use a pair of in-vacuum aspheric lenses, each with a numerical aperture of 0.8, to couple 10% of the 493 nm photons emitted from a $^{138}$Ba$^+$ ion into single-mode fibers. We also demonstrate that proximal effects of the lenses on the ion position and motion can be mitigated. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_07058 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer Carter, Allison L. O'Reilly, Jameson Toh, George Saha, Sagnik Shalaev, Mikhail Goetting, Isabella Monroe, Christopher Quantum Physics Atomic Physics Photonic interconnects between quantum systems will play a central role in both scalable quantum computing and quantum networking. Entanglement of remote qubits via photons has been demonstrated in many platforms; however, improving the rate of entanglement generation will be instrumental for integrating photonic links into modular quantum computers. We present an ion trap system that has the highest reported free-space photon collection efficiency for quantum networking. We use a pair of in-vacuum aspheric lenses, each with a numerical aperture of 0.8, to couple 10% of the 493 nm photons emitted from a $^{138}$Ba$^+$ ion into single-mode fibers. We also demonstrate that proximal effects of the lenses on the ion position and motion can be mitigated. |
| title | Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2310.07058 |