Purcell enhanced coupling of nanowire quantum emitters to silicon photonic waveguides

Nitin Mukhundhan, Akhil Ajay, Jochen Bissinger, Jonathan J. Finley, Gregor Koblmüller

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We design a quantum dot (QD) embedded in a vertical-cavity photonic nanowire (NW), deterministically integrated on a silicon-on-insulator (SOI) waveguide (WG), as a novel quantum light source in a quantum photonic integrated circuit (QPIC). Using a broadband QD emitter, we perform finite-difference time domain simulations to systematically tune key geometrical parameters and to explore the coupling mechanisms of the emission to the NW and WG modes. We find distinct Fabry-Perot resonances in the Purcell enhanced emission that govern the outcoupled power into the fundamental TE mode of the SOI-WG. With an optimized geometry that places the QD emitter in a finite NW in close proximity to the WG, we obtain peak outcoupling efficiencies for polarized emission as high as eighty percent.

Original languageEnglish
Pages (from-to)43068-43081
Number of pages14
JournalOptics Express
Volume29
Issue number26
DOIs
StatePublished - 20 Dec 2021

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