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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.06255 |
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| _version_ | 1866910243727867904 |
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| author | Booton, Georgia Wasawo, Tabijah Davis, William O. C. McGarry, Cameron Rusimova, Kristina R. Davis, Alex O. C. Nunn, Josh Mosley, Peter J. |
| author_facet | Booton, Georgia Wasawo, Tabijah Davis, William O. C. McGarry, Cameron Rusimova, Kristina R. Davis, Alex O. C. Nunn, Josh Mosley, Peter J. |
| contents | Optical switching remains a key outstanding challenge for scalable fault-tolerant photonic quantum computing due to the trade-off between speed, bandwidth, and loss. Scalable quantum photonics demands all three, to enable high computational clock rates and resource efficient scaling to large systems. We present a cavity-based optical switch that overcomes this limitation, demonstrating 22 ns rise time, insertion loss of 2.4 dB, and 17.5 dB extinction ratio. All-optical control is achieved via phase modulation of a signal field detuned from the near-degenerate two-photon absorption ladder in warm rubidium vapor. The ultimate performance of our switch, combining both speed and efficiency, will find applications in active multiplexing, loop-based quantum memory, and feedforward for quantum error-correction protocols. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_06255 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cavity-based optical switching via phase modulation in warm rubidium vapor Booton, Georgia Wasawo, Tabijah Davis, William O. C. McGarry, Cameron Rusimova, Kristina R. Davis, Alex O. C. Nunn, Josh Mosley, Peter J. Quantum Physics Optics Optical switching remains a key outstanding challenge for scalable fault-tolerant photonic quantum computing due to the trade-off between speed, bandwidth, and loss. Scalable quantum photonics demands all three, to enable high computational clock rates and resource efficient scaling to large systems. We present a cavity-based optical switch that overcomes this limitation, demonstrating 22 ns rise time, insertion loss of 2.4 dB, and 17.5 dB extinction ratio. All-optical control is achieved via phase modulation of a signal field detuned from the near-degenerate two-photon absorption ladder in warm rubidium vapor. The ultimate performance of our switch, combining both speed and efficiency, will find applications in active multiplexing, loop-based quantum memory, and feedforward for quantum error-correction protocols. |
| title | Cavity-based optical switching via phase modulation in warm rubidium vapor |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2508.06255 |