Deterministic Integration of Single Photon Sources in Silicon Based Photonic Circuits

Iman Esmaeil Zadeh*, Ali W. Elshaari, Klaus D. Jöns, Andreas Fognini, Dan Dalacu, Philip J. Poole, Michael E. Reimer, Val Zwiller

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    116 Citations (Scopus)
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    A major step toward fully integrated quantum optics is the deterministic incorporation of high quality single photon sources in on-chip optical circuits. We show a novel hybrid approach in which preselected III-V single quantum dots in nanowires are transferred and integrated in silicon based photonic circuits. The quantum emitters maintain their high optical quality after integration as verified by measuring a low multiphoton probability of 0.07 ± 0.07 and emission line width as narrow as 3.45 ± 0.48 GHz. Our approach allows for optimum alignment of the quantum dot light emission to the fundamental waveguide mode resulting in very high coupling efficiencies. We estimate a coupling efficiency of 24.3 ± 1.7% from the studied single-photon source to the photonic channel and further show by finite-difference time-domain simulations that for an optimized choice of material and design the efficiency can exceed 90%.

    Original languageEnglish
    Pages (from-to)2289-2294
    Number of pages6
    JournalNano Letters: a journal dedicated to nanoscience and nanotechnology
    Issue number4
    Publication statusPublished - 2016


    • hybrid photonics
    • Integrated quantum optics
    • nanowire quantum dot
    • single-photons


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