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arXiv · 2111.05594

Room-temperature on-chip generation of heralded single photons with switchable orbital angular momentum

Shan Zhang·Xue Feng·Wei Zhang·Kaiyu Cui·Fang Liu·Yidong Huang
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Abstract

In quantum optics, orbital angular momentum (OAM) is very promising to achieve high-dimensional quantum states due to the nature of infinite and discrete eigenvalue, which is quantized by the topological charge of l. Here, a heralded single-photon source with switchable OAM modes is proposed and demonstrated on silicon chip. At room-temperature, the heralded single photons with 11 OAM modes (l=2~6, -6~-1) have been successfully generated and switched through thermo-optical effect. We believe that such an integrated quantum source with multiple OAM modes and operating at room-temperature would provide a practical platform for high-dimensional quantum information processing. Moreover, our proposed architecture can also be extended to other material systems to further improve the performance of OAM quantum source.

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Shan Zhang, Xue Feng, Wei Zhang, Kaiyu Cui, Fang Liu, Yidong Huang. 2021-11-10. Room-temperature on-chip generation of heralded single photons with switchable orbital angular momentum. https://doi.org/10.1002/lpor.202200388

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