Integrated spectrally multiplexed light-matter interface at telecom band

• URL: http://arxiv.org/abs/2410.18516v1
• Date: Thu, 24 Oct 2024 08:04:11 GMT
• Title: Integrated spectrally multiplexed light-matter interface at telecom band
• Authors: Xueying Zhang, Bin Zhang, Shihai Wei, Hao Li, Jinyu Liao, Tao Zhou, Guangwei Deng, You Wang, Haizhi Song, Lixing You, Boyu Fan, Yunru Fan, Feng Chen, Guangcan Guo, Qiang Zhou,
• Abstract summary: We demonstrate a light-matter interface at telecom band in an integrated system. A five-spectral-channel atomic-frequency-comb photonic memory is prepared on a laser-written Er3+:LiNbO3 chip. The signal photons from time-bin entangled photon pairs at telecom band are sent into the on-chip memory and recalled after a storage time of 152 ns.
• Score: 16.69957678572003
• License:
• Abstract: Light-matter interface is an important building block for long-distance quantum networks. Towards a scalable quantum network with high-rate quantum information processing, it requires to develop integrated light-matter interfaces with broadband and multiplexing capacities. Here we demonstrate a light-matter interface at telecom band in an integrated system. A five-spectral-channel atomic-frequency-comb photonic memory is prepared on a laser-written Er3+:LiNbO3 chip. The bandwidth of each channel is 4 GHz with a channel spacing of 15 GHz. The signal photons from time-bin entangled photon pairs at telecom band are sent into the on-chip memory and recalled after a storage time of 152 ns. The entanglement-preserving nature of our integrated quantum interface is assessed by an input/output fidelity of >92% for all the five spectral channels. Our light-matter interfaces constitute a notable step forward toward a high-rate quantum network involving integrated device.

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