Control of single quantum emitters in bio-inspired aperiodic nano-photonic devices

• URL: http://arxiv.org/abs/2001.06723v1
• Date: Sat, 18 Jan 2020 20:40:07 GMT
• Title: Control of single quantum emitters in bio-inspired aperiodic nano-photonic devices
• Authors: Oliver J. Trojak, Sean Gorsky, Connor Murray, Fabrizio Sgrignuoli, Felipe Arruda Pinheiro, Suk-In Park, Jin Dong Song, Luca Dal Negro, Luca Sapienza
• Abstract summary: Enhancing light-matter interactions on a chip is of paramount importance to study nano- and quantum optics effects. We report on the demonstration of enhanced light-matter interaction and Purcell effects on a chip, based on bio-inspired aperiodic devices fabricated in silicon nitride and gallium arsenide.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Enhancing light-matter interactions on a chip is of paramount importance to study nano- and quantum optics effects and to realise integrated devices, for instance, for classical and quantum photonics, sensing and energy harvesting applications. Engineered nano-devices enable the efficient confinement of light and the control of the spontaneous emission dynamics of single emitters, which is crucial for cavity quantum electrodynamics experiments and for the development of classical and quantum light sources. Here, we report on the demonstration of enhanced light-matter interaction and Purcell effects on a chip, based on bio-inspired aperiodic devices fabricated in silicon nitride and gallium arsenide. Internal light sources, namely optically-active defect centers in silicon nitride and indium arsenide single quantum dots, are used to image and characterize, by means of micro-photoluminescence spectroscopy, the individual optical modes confined by photonic membranes with Vogel-spiral geometry. By studying the statistics of the measured optical resonances, in partnership with rigorous multiple scattering theory, we observe log-normal distributions and report quality factors with values as high as 2201+/-443. Building on the strong light confinement achieved in this novel platform, we further investigate the coupling of single semiconductor quantum dots to the confined optical modes. Our results show cavity quantum electrodynamics effects providing strong modifications of the spontaneous emission decay of single optical transitions: we show control of the decay lifetime of single emitters with a dynamic range reaching 20. Our findings improve the understanding of the fundamental physical properties of light-emitting Vogel-spiral systems, show their application to quantum photonic devices, and form the basis for the further development of classical and quantum active devices on a chip.

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