Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Photon Pair Generation from Bound States in the Continuum in Nonlinear Metasurfaces

Tomás Santiago‐Cruz, Sylvain D. Gennaro, Oleg Mitrofanov, Polina P. Vabishchevich, Sadhvikas Addamane, Don Bethke, John L. Reno, Igal Brener, Maria V. Chekhova

Published Jan 1, 2022• 0 citations
Publisher

Abstract

We report, for the first time, the generation of non-degenerate photon pairs via spontaneous parametric down-conversion driven by Bound States in the Continuum resonances in semiconductor metasurfaces.
DOI
10.1364/cleo_qels.2022.fth4b.3

Related papers

Photon-pair generation via bound states in the continuum in nonlinear metasurfaces

Matthew Parry, Andrea Mazzanti, Alexander N. Poddubny +5 more

We present a novel nonlinear metasurface featuring reconfigurable symmetry protected bound states in the continuum. It enhances photon-pair generation at non-degenerate photon frequencies via spontaneous parametric down-conversion, opening new opportunities for quantum spectroscopy and sensing.

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)•Jan 1, 2020•2 citations

Photon-pair Generation Via Multiple Bound States in the Continuum in Nonlinear Metasurfaces

Matthew Parry, Andrea Mazzanti, Alexander N. Poddubny +3 more

We present a nonlinear metasurface with engineered symmetry facilitating an orders-of-magnitude enhancement of photon-pair generation and tunable entanglement through hyperbolic phase matching of spontaneous parametric down-conversion via multiple extended bound states in the continuum.

Conference on Lasers and Electro-Optics•Jan 1, 2021•0 citations

Polarization tomography of photon pairs emitted by nonlinear metasurfaces with quasi-bound states in the continuum resonances

Jiho Noh, Tomás Santiago‐Cruz, Sylvain D. Gennaro +3 more

We use complete polarization tomography of photon pairs generated in semi-conductor metasurfaces via spontaneous parametric down-conversion to show how bound states in the continuum resonances affect the polarization state of the emitted photons.

•Jan 1, 2024•0 citations

Substrate-Driven Modulation of Photon Pair Generation in Quantum Optical Metasurfaces

Alberto Paniate, Ivano Ruo Berchera, Marco Genovese +1 more

Most modern quantum light sources are based on spontaneous parametric down-conversion (SPDC) in bulk non-linear crystals, with strict phase-matching requirements that limit their design flexibility and the range of two-photon states produced. Recent research has focused on generating quantum light via SPDC with metasurfaces [1], i.e. array of nanoresonators with sub-wavelength dimensions. At this scale, SPDC becomes independent of phase matching, allowing the use of materials with greater nonlinear susceptibility and enabling efficient photon generation with tailored properties for the angular and spectral distribution and polarization.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 23, 2025•0 citations

Generation and shaping of quantum photon-pair states in nonlinear metasurfaces

Andrey A. Sukhorukov

We present theoretical and experimental advances on photon-pair generation through spontaneous parametric down-conversion (SPDC) in nonlinear nanostructures and metasurfaces, underpinning quantum entanglement engineering at sub-wavelength scale for photon shaping with tailored polarization and spatial correlations. We derive explicit theoretical expressions for the measurable photon counts and quantum correlations, incorporating material dispersion and absorption characteristics [Phys. Rev. Lett. 117, 123901 (2016)], and demonstrate experimentally the generation of quantum heralded photon pairs from a single AlGaAs nanodisk [Optica 6, 1416 (2019)]. We further reveal the opportunities to enhance the generation rate through high-Q resonances including bound states in the continuum [doi:10.1117/12.2539888 (2019)]. We also outline the applications of metasurfaces for the manipulation and measurement of multi-photon quantum states for free-space quantum imaging and communications.

Active Photonic Platforms (APP)•Aug 20, 2020•0 citations

Enhanced generation of nondegenerate photon pairs in nonlinear metasurfaces

Matthew Parry, Andrea Mazzanti, Alexander N. Poddubny +3 more

We predict theoretically a regime of photon-pair generation driven by the interplay of multiple bound states in the continuum resonances in nonlinear metasurfaces. This nondegenerate photon-pair generation is derived from the hyperbolic topology of the transverse phase matching and can enable orders-of-magnitude enhancement of the photon rate and spectral brightness, as compared to the degenerate regime. We show through comprehensive simulations that the entanglement of the photon pairs can be tuned by varying the pump polarization, which can underpin future advances and applications of ultracompact quantum light sources.

arXiv:2104.07299•Advanced Photonics•Sep 1, 2021•113 citations
Most modern quantum light sources are based on spontaneous parametric down-conversion (SPDC) in bulk non-linear crystals, with strict phase-matching requirements that limit their design flexibility and the range of two-photon states produced. Recent research has focused on generating quantum light via SPDC with metasurfaces [1], i.e. array of nanoresonators with sub-wavelength dimensions. At this scale, SPDC becomes independent of phase matching, allowing the use of materials with greater nonlinear susceptibility and enabling efficient photon generation with tailored properties for the angular and spectral distribution and polarization.
We present theoretical and experimental advances on photon-pair generation through spontaneous parametric down-conversion (SPDC) in nonlinear nanostructures and metasurfaces, underpinning quantum entanglement engineering at sub-wavelength scale for photon shaping with tailored polarization and spatial correlations. We derive explicit theoretical expressions for the measurable photon counts and quantum correlations, incorporating material dispersion and absorption characteristics [Phys. Rev. Lett. 117, 123901 (2016)], and demonstrate experimentally the generation of quantum heralded photon pairs from a single AlGaAs nanodisk [Optica 6, 1416 (2019)]. We further reveal the opportunities to enhance the generation rate through high-Q resonances including bound states in the continuum [doi:10.1117/12.2539888 (2019)]. We also outline the applications of metasurfaces for the manipulation and measurement of multi-photon quantum states for free-space quantum imaging and communications.
We predict theoretically a regime of photon-pair generation driven by the interplay of multiple bound states in the continuum resonances in nonlinear metasurfaces. This nondegenerate photon-pair generation is derived from the hyperbolic topology of the transverse phase matching and can enable orders-of-magnitude enhancement of the photon rate and spectral brightness, as compared to the degenerate regime. We show through comprehensive simulations that the entanglement of the photon pairs can be tuned by varying the pump polarization, which can underpin future advances and applications of ultracompact quantum light sources.