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Journal Article

Photon Pairs from Resonant Metasurfaces

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/persons/resource/persons231249

Santiago-Cruz,  Tomas
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
University of Erlangen-Nürnberg, Erlangen, Germany;
Max Planck School of Photonics, Jena, Germany;

Sultanov,  Vitaliy
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
University of Erlangen-Nürnberg, Erlangen, Germany;

/persons/resource/persons201034

Chekhova,  Maria V.
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
University of Erlangen-Nürnberg, Erlangen, Germany;
Max Planck School of Photonics, Jena, Germany;

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Citation

Santiago-Cruz, T., Fedotova, A., Sultanov, V., Weissflog, M. A., Arslan, D., Younesi, M., et al. (2021). Photon Pairs from Resonant Metasurfaces. Nano Letters, 21(10), 4423-4429. doi:10.1021/acs.nanolett.1c01125.


Cite as: https://hdl.handle.net/21.11116/0000-0008-9A26-0
Abstract
All-dielectric optical metasurfaces are a workhorse in nano-optics, because of both their ability to manipulate light in different degrees of freedom and their excellent performance at light frequency conversion. Here, we demonstrate first-time generation of photon pairs via spontaneous parametric-down conversion in lithium niobate quantum optical metasurfaces with electric and magnetic Mie-like resonances at various wavelengths. By engineering the quantum optical metasurface, we tailor the photon-pair spectrum in a controlled way. Within a narrow bandwidth around the resonance, the rate of pair production is enhanced up to 2 orders of magnitude, compared to an unpatterned film of the same thickness and material. These results enable flat-optics sources of entangled photons—a new promising platform for quantum optics experiments.