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arXiv · 2306.08229

Telecom-band integrated multimode photonic quantum memory

Xueying Zhang·Bin Zhang·Shihai Wei·Hao Li·Jinyu Liao·Cheng Li·Guangwei Deng·You Wang·Haizhi Song·Lixing You·Bo Jing·Feng Chen·Guang-Can Guo·Qiang Zhou
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Abstract

Telecom-band integrated quantum memory is an elementary building block for developing quantum networks compatible with fiber communication infrastructures. Towards such a network with large capacity, an integrated multimode photonic quantum memory at telecom band has yet been demonstrated. Here we report a fiber-integrated multimode quantum storage of single photon at telecom band on a laser-written chip. The storage device is a fiber-pigtailed Er3+:LiNbO3 waveguide and allows a storage of up to 330 temporal modes of heralded single photon with 4-GHz-wide bandwidth at 1532 nm and a 167-fold increasing of coincidence detection rate with respect to single mode. Our memory system with all-fiber addressing is performed using telecom-band fiber-integrated and on-chip devices. The results represent an important step for the future quantum networks using integrated photonics devices.

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Xueying Zhang, Bin Zhang, Shihai Wei, Hao Li, Jinyu Liao, Cheng Li, Guangwei Deng, You Wang, Haizhi Song, Lixing You, Bo Jing, Feng Chen, Guang-Can Guo, Qiang Zhou. 2023-06-14. Telecom-band integrated multimode photonic quantum memory. https://arxiv.org/abs/2306.08229

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