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arXiv · 2201.11882

Integrated Room Temperature Single Photon Source for Quantum Key Distribution

Helen Zhi Jie Zeng·Minh Anh Phan Ngyuen·Xiaoyu Ai·Adam Bennet·Alexander Solnstev·Arne Laucht·Ali Al-Juboori·Milos Toth·Rich Mildren·Robert Malaney·Igor Aharonovich
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Abstract

High-purity single photon sources (SPS) that can operate at room temperature are highly desirable for a myriad of applications, including quantum photonics and quantum key distribution. In this work, we realise an ultra-bright solid-state SPS based on an atomic defect in hexagonal boron nitride (hBN) integrated with a solid immersion lens (SIL). The SIL increases the source efficiency by a factor of six, and the integrated system is capable of producing over ten million single photons per second at room temperature. Our results are promising for practical applications of SPS in quantum communication protocols.

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Helen Zhi Jie Zeng, Minh Anh Phan Ngyuen, Xiaoyu Ai, Adam Bennet, Alexander Solnstev, Arne Laucht, Ali Al-Juboori, Milos Toth, Rich Mildren, Robert Malaney, Igor Aharonovich. 2022-01-28. Integrated Room Temperature Single Photon Source for Quantum Key Distribution. https://arxiv.org/abs/2201.11882

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