Van der Waals engineering for quantum-entangled photon generation

Van der Waals engineering for quantum-entangled photon generation

Van der Waals engineering serves as a powerful tool to tailor material properties and design excitonic devices. Here we report quantum-entangled photon pair generation through van der Waals engineering with two-dimensional materials. We align two van der Waals thin layers perpendicular to each other...

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Bibliographic Details
Main Authors: Kallioniemi, Leevi, Lyu, Xiaodan, He, Ruihua, Rasmita, Abdullah, Duan, Ruihuan, Liu, Zheng, Gao, Weibo
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2025
Subjects:
Engineering
Entangled photons
Excitonics
Online Access:https://hdl.handle.net/10356/182690
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Institution: Nanyang Technological University
Language: English
Description
Summary:Van der Waals engineering serves as a powerful tool to tailor material properties and design excitonic devices. Here we report quantum-entangled photon pair generation through van der Waals engineering with two-dimensional materials. We align two van der Waals thin layers perpendicular to each other, yielding polarization-entangled photon pairs through the interference of biphoton emission in the two flakes. The polarization-entangled state is measured with a fidelity up to 86 ± 0.7%. The compatibility of van der Waals engineering with on-chip photonics opens new possibilities for entangled photon source integration at the subwavelength scale.

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