Dynamic rephasing in a telecom warm vapor quantum memory
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866917410701836288 |
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| author | Wenniger, Ilse Maillette de Buy Burdekin, Paul Zhang, Shicheng Rasiah, Mikhael J. Rastogi, Anindya Schmidt, Otto T. P. Ledingham, Patrick M. Walmsley, Ian A. Thomas, S. E. |
| author_facet | Wenniger, Ilse Maillette de Buy Burdekin, Paul Zhang, Shicheng Rasiah, Mikhael J. Rastogi, Anindya Schmidt, Otto T. P. Ledingham, Patrick M. Walmsley, Ian A. Thomas, S. E. |
| contents | The Off-Resonant Cascaded Absorption (ORCA) protocol in warm atomic vapors offers a scalable platform for high-bandwidth, low noise quantum memories, but its coherence time is fundamentally limited by Doppler-induced dephasing. We introduce and experimentally demonstrate a dynamic rephasing protocol that counteracts Doppler dephasing in a telecom-band ORCA quantum memory. By transferring the stored excitation to an auxiliary shelving state, we effectively reverse the accumulated Doppler phase and extend the storage time by a factor of 50 while preserving the memory's GHz bandwidth and low noise. Using this protocol, we then demonstrate on-demand storage and retrieval of four independent time-bin modes within a single warm vapor memory -- showing that Doppler dephasing can alternatively be harnessed for high-dimensional temporal mode processing. Our results establish rephasing in warm atomic vapors as a viable route toward high-bandwidth, temporally multiplexed quantum memories operating at room temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_13900 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Dynamic rephasing in a telecom warm vapor quantum memory Wenniger, Ilse Maillette de Buy Burdekin, Paul Zhang, Shicheng Rasiah, Mikhael J. Rastogi, Anindya Schmidt, Otto T. P. Ledingham, Patrick M. Walmsley, Ian A. Thomas, S. E. Quantum Physics Atomic Physics The Off-Resonant Cascaded Absorption (ORCA) protocol in warm atomic vapors offers a scalable platform for high-bandwidth, low noise quantum memories, but its coherence time is fundamentally limited by Doppler-induced dephasing. We introduce and experimentally demonstrate a dynamic rephasing protocol that counteracts Doppler dephasing in a telecom-band ORCA quantum memory. By transferring the stored excitation to an auxiliary shelving state, we effectively reverse the accumulated Doppler phase and extend the storage time by a factor of 50 while preserving the memory's GHz bandwidth and low noise. Using this protocol, we then demonstrate on-demand storage and retrieval of four independent time-bin modes within a single warm vapor memory -- showing that Doppler dephasing can alternatively be harnessed for high-dimensional temporal mode processing. Our results establish rephasing in warm atomic vapors as a viable route toward high-bandwidth, temporally multiplexed quantum memories operating at room temperature. |
| title | Dynamic rephasing in a telecom warm vapor quantum memory |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2604.13900 |