Photon Pairs from Resonant Metasurfaces

Santiago-Cruz T, Fedotova A, Sultanov V, Weissflog MA, Arslan D, Younesi M, Pertsch T, Staude I, Setzpfandt F, Chekhova M (2021)

Publication Type: Journal article

Publication year: 2021


DOI: 10.1021/acs.nanolett.1c01125


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.

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Santiago-Cruz, T., Fedotova, A., Sultanov, V., Weissflog, M.A., Arslan, D., Younesi, M.,... Chekhova, M. (2021). Photon Pairs from Resonant Metasurfaces. Nano Letters.


Santiago-Cruz, Tomás, et al. "Photon Pairs from Resonant Metasurfaces." Nano Letters (2021).

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