Spontaneous Parametric Down-Conversion from Resonant Metasurfaces

All-dielectric optical metasurfaces are a workhorse in nano-optics due to 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 c...

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Bibliographic Details
Published in:arXiv.org 2021-03
Main Authors: Santiago-Cruz, Tomás, Fedotova, Anna, Sultanov, Vitaliy, Weissflog, Maximilian A, Arslan, Dennis, Younesi, Mohammadreza, Pertsch, Thomas, Staude, Isabelle, Setzpfandt, Frank, Chekhova, Maria V
Format: Article
Language:English
Subjects:
Conversion
Lithium niobates
Magnetic resonance
Metasurfaces
Nano-optics
Optics
Pair production
Photons
Quantum optics
Thickness
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Summary:All-dielectric optical metasurfaces are a workhorse in nano-optics due to 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 two 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.
ISSN:2331-8422