Quantum communication applications require a scalable approach to integrate bright sources of entangled photon-pairs in complex on-chip quantum circuits. Currently, the most promising sources are based on III/V semiconductor quantum dots. However, complex photonic circuitry is mainly achieved in silicon photonics due to the tremendous technological challenges in circuit fabrication. We take the best of both worlds by developing a new hybrid on-chip nanofabrication approach. We demonstrate for the first time on-chip generation, spectral filtering, and routing of single-photons from selected single and multiple III/V semiconductor nanowire quantum emitters all deterministically integrated in a CMOS compatible silicon nitride photonic circuit.
Klaus D. Jöns, Ali W. Elshaari, Iman Esmaeil Zadeh, Andreas Fognini, Michael E. Reimer, Dan Dalacu, Philip J. Poole, and Val Zwiller, "On-chip hybrid quantum circuits (Conference Presentation)," Proc. SPIE 10358, Quantum Photonic Devices, 103580R (Presented at SPIE Nanoscience + Engineering: August 07, 2017; Published: 25 September 2017); https://doi.org/10.1117/12.2271680.5588471519001.
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