| Autor: |
Antariksha Das, Mohsen Falamarzi Askarani, Jacob H Davidson, Neil Sinclair, Joshua A Slater, Sara Marzban, Daniel Oblak, Charles W Thiel, Rufus L Cone, Wolfgang Tittel |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Materials for Quantum Technology, Vol 4, Iss 3, p 035202 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2633-4356 |
| DOI: |
10.1088/2633-4356/ad6524 |
| Popis: |
Rare-earth ion-doped crystals are of great interest for quantum memories, a central component in future quantum repeaters. To assess the promise of 1 $\%$ Tm ^3+ -doped yttrium gallium garnet (Tm:YGG), we report measurements of optical coherence and energy-level lifetimes of its ^3 H $_6~\leftrightarrow~^3$ H _4 transition at a temperature of around 500 mK and various magnetic fields. Using spectral hole burning (SHB), we find hyperfine ground-level (Zeeman level) lifetimes of several minutes at magnetic fields of less than 1000 G. We also measure coherence time exceeding one millisecond using two-pulse photon echoes. Three-pulse photon echo and SHB measurements reveal that due to spectral diffusion, the effective coherence time reduces to a few µ s over a timescale of around two hundred seconds. Finally, temporal and frequency-multiplexed storage of optical pulses using the atomic frequency comb protocol is demonstrated. Our results suggest Tm:YGG to be promising for multiplexed photonic quantum memory for quantum repeaters. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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