Efficient Pumping of Spectral Holes in a Tm$^{3+}$: YAG Crystal for Broadband Quantum Optical Storage

• URL: http://arxiv.org/abs/2412.12379v1
• Date: Mon, 16 Dec 2024 22:16:34 GMT
• Title: Efficient Pumping of Spectral Holes in a Tm$^{3+}$: YAG Crystal for Broadband Quantum Optical Storage
• Authors: Yisheng Lei, Zongfeng Li, Mahdi Hosseini,
• Abstract summary: We report a storage efficiency greater than 28% in a Tm$3+$: YAG crystal in elevated temperatures and without compromising the memory bandwidth. We propose a general method for large-bandwidth atomic-frequency memory with non-Kramers rare-earth-ion (REI) in solids.
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• Abstract: Quantum memory devices with high storage efficiency and bandwidth are essential elements for future quantum networks. Here, we report a storage efficiency greater than 28% in a Tm$^{3+}$: YAG crystal in elevated temperatures and without compromising the memory bandwidth. Using various pumping and optimization techniques, we demonstrate multi-frequency window storage with a high memory bandwidth of 630 MHz. Moreover, we propose a general method for large-bandwidth atomic-frequency memory with non-Kramers rare-earth-ion (REI) in solids enabling significantly higher storage efficiency and bandwidth. Our study advances the practical applications of quantum memory devices based on REI-doped crystals.

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