High-resolution tunable frequency beamsplitter enabled by an integrated silicon pulse shaper
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911411285786624 |
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| author | Su, Chen-You Wu, Kaiyi Cohen, Lucas M. Fatema, Saleha Lingaraju, Navin B. Lu, Hsuan-Hao Weiner, Andrew M. Lukens, Joseph M. McKinney, Jason D. |
| author_facet | Su, Chen-You Wu, Kaiyi Cohen, Lucas M. Fatema, Saleha Lingaraju, Navin B. Lu, Hsuan-Hao Weiner, Andrew M. Lukens, Joseph M. McKinney, Jason D. |
| contents | We demonstrate high-fidelity, tunable, and ultrafine-resolution on-chip frequency beamsplitters using a quantum frequency processor based on an integrated pulse shaper with six spectral channels. Near-ideal Hadamard gate performance is achieved, with fidelity F > 0.9995 and modified success probability P > 0.9621 maintained across frequency spacings from 2-5 GHz and down to as few as four spectral pulse shaper channels. The system's support of frequency spacings as narrow as 2 GHz significantly surpasses prior bulk demonstrations and enables arbitrary splitting ratios via spectral phase or modulation index control. These results establish a scalable and resource-efficient platform for integrated frequency-bin quantum photonics, opening new directions in quantum information processing, including densely parallel single-qubit operations and multidimensional gate implementations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_23028 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | High-resolution tunable frequency beamsplitter enabled by an integrated silicon pulse shaper Su, Chen-You Wu, Kaiyi Cohen, Lucas M. Fatema, Saleha Lingaraju, Navin B. Lu, Hsuan-Hao Weiner, Andrew M. Lukens, Joseph M. McKinney, Jason D. Quantum Physics Optics We demonstrate high-fidelity, tunable, and ultrafine-resolution on-chip frequency beamsplitters using a quantum frequency processor based on an integrated pulse shaper with six spectral channels. Near-ideal Hadamard gate performance is achieved, with fidelity F > 0.9995 and modified success probability P > 0.9621 maintained across frequency spacings from 2-5 GHz and down to as few as four spectral pulse shaper channels. The system's support of frequency spacings as narrow as 2 GHz significantly surpasses prior bulk demonstrations and enables arbitrary splitting ratios via spectral phase or modulation index control. These results establish a scalable and resource-efficient platform for integrated frequency-bin quantum photonics, opening new directions in quantum information processing, including densely parallel single-qubit operations and multidimensional gate implementations. |
| title | High-resolution tunable frequency beamsplitter enabled by an integrated silicon pulse shaper |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2601.23028 |