Monolithic Integration of Single Quantum Emitters in hBN Bullseye Cavities

• URL: http://arxiv.org/abs/2309.14575v1
• Date: Mon, 25 Sep 2023 23:19:50 GMT
• Title: Monolithic Integration of Single Quantum Emitters in hBN Bullseye Cavities
• Authors: Lesley Spencer (1 and 2), Jake Horder (1), Sejeong Kim (3), Milos Toth (1 and 2) and Igor Aharonovich (1 and 2) ((1) School of Mathematical and Physical Sciences University of Technology Sydney, (2) ARC Centre of Excellence for Transformative Meta-Optical Systems, (3) Department of Electrical and Electronic Engineering University of Melbourne)
• Abstract summary: This work utilizes a monolithic circular Bragg grating device to enhance the collection of single photons with 436 nm wavelength emitted from quantum emitters in hexagonal boron nitride. We observe a 6- fold increase in collected intensity for a single photon emitter coupled to a device compared to an uncoupled emitter, and show exceptional spectral stability at cryogenic temperature.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The ability of hexagonal boron nitride to host quantum emitters in the form of deep-level color centers makes it an important material for quantum photonic applications. This work utilizes a monolithic circular Bragg grating device to enhance the collection of single photons with 436 nm wavelength emitted from quantum emitters in hexagonal boron nitride. We observe a 6- fold increase in collected intensity for a single photon emitter coupled to a device compared to an uncoupled emitter, and show exceptional spectral stability at cryogenic temperature. The devices were fabricated using a number of etching methods, beyond standard fluorine-based reactive ion etching, and the quantum emitters were created using a site-specific electron beam irradiation technique. Our work demonstrates the potential of monolithically-integrated systems for deterministically-placed quantum emitters using a variety of fabrication options.

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