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arXiv · 1706.05610

Electrically driven quantum light emission in electromechanically-tuneable photonic crystal cavities

M. Petruzzella·F. M. Pagliano·Z. Zobenica·S. Birindelli·M. Cotrufo·F. W. M van Otten·R. W. van der Heijden·A. Fiore
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Abstract

A single quantum dot deterministically coupled to a photonic crystal environment constitutes an indispensable elementary unit to both generate and manipulate single-photons in next-generation quantum photonic circuits. To date, the scaling of the number of these quantum nodes on a fully-integrated chip has been prevented by the use of optical pumping strategies that require a bulky off-chip laser along with the lack of methods to control the energies of nano-cavities and emitters. Here, we concurrently overcome these limitations by demonstrating electrical injection of single excitonic lines within a nano-electro-mechanically tuneable photonic crystal cavity. When an electrically-driven dot line is brought into resonance with a photonic crystal mode, its emission rate is enhanced. Anti-bunching experiments reveal the quantum nature of these on-demand sources emitting in the telecom range. These results represent an important step forward in the realization of integrated quantum optics experiments featuring multiple electrically-triggered Purcell-enhanced single-photon sources embedded in a reconfigurable semiconductor architecture.

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M. Petruzzella, F. M. Pagliano, Z. Zobenica, S. Birindelli, M. Cotrufo, F. W. M van Otten, R. W. van der Heijden, A. Fiore. 2017-10-08. Electrically driven quantum light emission in electromechanically-tuneable photonic crystal cavities. https://doi.org/10.1063/1.5008590

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