Room-temperature ladder-type optical memory compatible with single photons from InGaAs quantum dots
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912125538009088 |
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| author | Maaß, Benjamin Ewald, Norman Vincenz Barua, Avijit Reitzenstein, Stephan Wolters, Janik |
| author_facet | Maaß, Benjamin Ewald, Norman Vincenz Barua, Avijit Reitzenstein, Stephan Wolters, Janik |
| contents | On-demand storage and retrieval of quantum information in coherent light-matter interfaces is a key requirement for future quantum networking and quantum communication applications. Alkali vapor memories offer scalable and robust high-bandwidth storage at high repetition rates which makes them a natural fit to interface with solid-state single-photon sources. Here, we experimentally realize a room-temperature ladder-type atomic vapor memory that operates on the Cs D1 line. We provide a detailed experimental characterization and demonstration of on-demand storage and retrieval of weak coherent laser pulses with 0.06 photons per pulse at a high signal-to-noise ratio of SNR$=830(80)$. The memory achieves a maximum internal storage efficiency of $η_{\text{int}}=15(1)\%$ and an estimated $1/e$-storage time of $τ_{\mathrm{s}}\approx32\,$ns. Benchmark properties for the storage of single photons from inhomogeneously broadened state-of-the-art solid-state emitters are estimated from the performance of the memory. Together with the immediate availability of high-quality InGaAs quantum dots emitting at 895\,nm, these results provide clear prospects for the development of a heterogeneous on-demand quantum light interface. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2402_14686 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Room-temperature ladder-type optical memory compatible with single photons from InGaAs quantum dots Maaß, Benjamin Ewald, Norman Vincenz Barua, Avijit Reitzenstein, Stephan Wolters, Janik Quantum Physics On-demand storage and retrieval of quantum information in coherent light-matter interfaces is a key requirement for future quantum networking and quantum communication applications. Alkali vapor memories offer scalable and robust high-bandwidth storage at high repetition rates which makes them a natural fit to interface with solid-state single-photon sources. Here, we experimentally realize a room-temperature ladder-type atomic vapor memory that operates on the Cs D1 line. We provide a detailed experimental characterization and demonstration of on-demand storage and retrieval of weak coherent laser pulses with 0.06 photons per pulse at a high signal-to-noise ratio of SNR$=830(80)$. The memory achieves a maximum internal storage efficiency of $η_{\text{int}}=15(1)\%$ and an estimated $1/e$-storage time of $τ_{\mathrm{s}}\approx32\,$ns. Benchmark properties for the storage of single photons from inhomogeneously broadened state-of-the-art solid-state emitters are estimated from the performance of the memory. Together with the immediate availability of high-quality InGaAs quantum dots emitting at 895\,nm, these results provide clear prospects for the development of a heterogeneous on-demand quantum light interface. |
| title | Room-temperature ladder-type optical memory compatible with single photons from InGaAs quantum dots |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2402.14686 |