Integrated spectrally multiplexed light–matter interface at telecom band

The 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 the telecom band in an integrated system. A five-spectral-channel atomic-frequency-comb photonic memory is prepared on a laser-written Er 3+ :LiNbO 3 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 the 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 five spectral channels. Our light–matter interfaces constitute a notable step forward toward a high-rate quantum network involving integrated devices.

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Publication Details

Journal
Photonics Research
Published
2024-09-16
DOI
https://doi.org/10.1364/prj.537109
Citations
2
Primary Topic
Photonic and Optical Devices
Type
article
Field-Weighted Citation Impact
0.42
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article

Integrated spectrally multiplexed light–matter interface at telecom band

Tao Zhou, Shihai Wei, Qiang Zhou, Lixing You et al.
2 citations
Photonics Research
Photonic and Optical Devices
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article

Integrated spectrally multiplexed light–matter interface at telecom band

Tao Zhou, Shihai Wei, Qiang Zhou, Lixing You, Guang‐Can Guo, Boyu Fan, Jinyu Liao, Guangwei Deng, You Wang, Xueying Zhang, Yunru Fan, Chen Feng, Haizhi Song, Hao Li, Bin Zhang
article en
2 citations

Abstract

The 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 the telecom band in an integrated system. A five-spectral-channel atomic-frequency-comb photonic memory is prepared on a laser-written Er 3+ :LiNbO 3 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 the 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 five spectral channels. Our light–matter interfaces constitute a notable step forward toward a high-rate quantum network involving integrated devices.

Photonics ResearchVol. 12(12)
University of Science and Technology of China (CN), University of Electronic Science and Technology of China (CN), Shandong University (CN), Henan Tianguan Group (China) (CN), Shanghai Institute of Microsystem and Information Technology (CN)
Affordable and clean energy
Openalex Percentile: Top 38%
Photonic and Optical Devices
0.42
DOISourceOpenAlex
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