Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN

• URL: http://arxiv.org/abs/2006.13048v1
• Date: Tue, 23 Jun 2020 14:20:46 GMT
• Title: Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN
• Authors: Stefan H\"au{\ss}ler, Gregor Bayer, Richard Waltrich, Noah Mendelson, Chi Li, David Hunger, Igor Aharonovich and Alexander Kubanek
• Abstract summary: In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. We achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.
• Score: 52.915502553459724
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Realization of quantum photonic devices requires coupling single quantum emitters to the mode of optical resonators. In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. The sub 10 nm thickness of hBN and its smooth surface enables efficient integration into the cavity mode. We operate our hybrid platform over a broad spectral range larger than 30 nm and use its tuneability to explore different coupling regimes. Consequently, we achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling, both records for hBN-cavity systems. Additionally, we implement an excitation and readout scheme for resonant excitation that allows us to establish cavity-assisted PLE spectroscopy. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.

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