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

• URL: http://arxiv.org/abs/2111.05594v2
• Date: Fri, 24 Dec 2021 03:27:12 GMT
• Title: Room-temperature on-chip generation of heralded single photons with switchable orbital angular momentum
• Authors: Shan Zhang, Xue Feng, Wei Zhang, Kaiyu Cui, Fang Liu, and Yidong Huang
• Abstract summary: In quantum optics, orbital angular momentum (OAM) is very promising to achieve high-dimensional quantum states. A heralded single-photon source with switchable OAM modes is proposed and demonstrated on silicon chip.
• Score: 8.189722098403596
• License: http://creativecommons.org/licenses/by/4.0/
• 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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