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arXiv · 2209.00802

Quantum storage of 1650 modes of single photons at telecom wavelength

Shi-Hai Wei·Bo Jing·Xue-Ying Zhang·Jin-Yu Liao·Hao Li·Li-Xing You·Zhen Wang·You Wang·Guang-Wei Deng·Hai-Zhi Song·Daniel Oblak·Guang-Can Guo·Qiang Zhou
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Abstract

To advance the full potential of quantum networks one should be able to distribute quantum resources over long distances at appreciable rates. As a consequence, all components in the networks need to have large multimode capacity to manipulate photonic quantum states. Towards this end, a multimode photonic quantum memory, especially one operating at telecom wavelength, remains a key challenge. Here we demonstrate a spectro-temporally multiplexed quantum memory at 1532 nm. Multimode quantum storage of telecom-band heralded single photons is realized by employing the atomic frequency comb protocol in a 10-m-long cryogenically cooled erbium doped silica fibre. The multiplexing encompasses five spectral channels - each 10 GHz wide - and in each of these up to 330 temporal modes, resulting in the simultaneous storage of 1650 modes of single photons. Our demonstrations open doors for high-rate quantum networks, which are essential for future quantum internet.

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Shi-Hai Wei, Bo Jing, Xue-Ying Zhang, Jin-Yu Liao, Hao Li, Li-Xing You, Zhen Wang, You Wang, Guang-Wei Deng, Hai-Zhi Song, Daniel Oblak, Guang-Can Guo, Qiang Zhou. 2022-09-02. Quantum storage of 1650 modes of single photons at telecom wavelength. https://arxiv.org/abs/2209.00802

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