Compact QED system of single photon emitter coupled to silicon nitride nanobeam

Mohit Khurana; Abdulrahman Alajlan; Xiaohan Liu; Alexey V. Akimov

doi:10.1117/12.2566349

20 August 2020 Compact QED system of single photon emitter coupled to silicon nitride nanobeam

Mohit Khurana, Abdulrahman Alajlan, Xiaohan Liu, Alexey V. Akimov

Proceedings Volume 11461, Active Photonic Platforms XII; 114612I (2020) https://doi.org/10.1117/12.2566349
Event: SPIE Nanoscience + Engineering, 2020, Online Only

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Abstract

We discuss a compact QED system of Germanium Vacancy(GeV) centres coupled to high quality factor silicon nitride nanobeam Photonic crystal(PhC) cavities. Devices with a quality factor of 24,000 around the zero-phonon line of the GeV center in diamond are demonstrated with an efficient fiber-to-waveguide coupling platform. We also present a method for fiber-waveguide coupling that allows seamless transition of photons from optical fibers into photonics devices and vice versa. Our method uses conical tapered optical fibers (with a tapering angle of ∼ 4° ) that are coupled over ∼ 11μm to a silicon nitride (Si₃N₄) waveguide taper (with a tapering angle of ∼ 1° ) achieving upto ∼ 96% coupling efficiency.

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Mohit Khurana, Abdulrahman Alajlan, Xiaohan Liu, and Alexey V. Akimov "Compact QED system of single photon emitter coupled to silicon nitride nanobeam", Proc. SPIE 11461, Active Photonic Platforms XII, 114612I (20 August 2020); https://doi.org/10.1117/12.2566349

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