Coupling Quantum Emitters in 2D Materials with Tapered Fibers

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Journal Article
ACS Photonics, 2017, 4 (4), pp. 761 - 767
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© 2017 American Chemical Society. Realization of integrated photonic circuits on a single chip requires controlled manipulation and integration of solid-state quantum emitters with nanophotonic components. Previous works focused on emitters embedded in a three-dimensional crystal, such as nanodiamonds or quantum dots. In contrast, in this work we demonstrate coupling of a single emitter in a two-dimensional (2D) material, namely, hexagonal boron nitride, with a tapered optical fiber and find a collection efficiency of the system of 10%. Furthermore, due to the single dipole character of the emitter, we were able to analyze the angular emission pattern of the coupled system via back focal plane imaging. The good coupling efficiency to the tapered fiber even allows excitation and detection in a fully fiber coupled way, yielding a true integrated system. Our results provide evidence of the feasibility to efficiently integrate quantum emitters in 2D materials with photonic structures.
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