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posted by Fnord666 on Saturday October 12 2019, @01:04PM   Printer-friendly
from the quantum-optics dept.

Arthur T Knackerbracket has found the following story:

Researchers from the Photonics Research Group, an imec research group at Ghent university and MIT announced that they have integrated single photon emitters in 2-D layered materials with a silicon nitride photonic chip. Even for moderate quantum yields, dielectric cavities could be designed such that the single photon extraction into the guided mode can reach unity. The results published in Nature Communications, provide a crucial step in fundamental quantum photonics and 2-D materials research.

Photonic integrated circuits (PICs) enable the miniaturization of complex quantum optical circuits connecting large numbers of photonic devices with optimized insertion losses and phase stability. A central building block for such an integrated quantum circuit is a single photon emitter (SPE), and a variety of material systems have been investigated to create such on-chip SPEs. 2-D-based SPEs have some extraction efficiencies without the need of any additional processing, allowing efficient single photon transfer between the host and the underlying PIC. Third, 2-D materials grown with high wafer-scale uniformity are becoming more readily available.

[...] "These results provide a crucial step in scaling up quantum photonic devices using 2-D-based integrated single photon sources," stated Frédéric Peyskens, first author of the paper.

More information: Frédéric Peyskens et al. Integration of single photon emitters in 2-D layered materials with a silicon nitride photonic chip, Nature Communications (2019). DOI: 10.1038/s41467-019-12421-0


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  • (Score: 0) by Anonymous Coward on Saturday October 12 2019, @05:09PM (1 child)

    by Anonymous Coward on Saturday October 12 2019, @05:09PM (#906383)

    Can anyone explain this?
    > … single photon extraction into the guided mode can reach unity.

  • (Score: 2, Informative) by VacuumTube on Saturday October 12 2019, @09:39PM

    by VacuumTube (7693) Subscriber Badge on Saturday October 12 2019, @09:39PM (#906434) Journal

    I believe this is referring to fraction of successful coupling of photoluminescence into a waveguide.

    You can read more about it: https://www.nature.com/articles/s41467-019-12421-0 [nature.com]