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

    Research output: Contribution to journalArticleScientificpeer-review

    91 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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