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25 - 30 January 2025
San Francisco, California, US
Conference 13369 > Paper 13369-66
Paper 13369-66

High-performance photon-pair source using a two-photon polymerized strip-loaded lithium niobate waveguide

On demand | Presented live 29 January 2025

Abstract

Integrated photon-pair sources utilizing Spontaneous Parametric Down-Conversion (SPDC) are gaining interest for their role in advancing quantum computing, metrology, and encryption technologies. Realizing efficient thin-film fabrication methods is crucial for mass production. Traditional techniques like etching, and lithography are time-consuming, expensive, and difficult to rectify. The two-photon polymerization (2PP) technique provides several advantages, including versatile substrate options, easy erasure and reprinting of structures, and rapid prototyping. We used 2PP to fabricate a strip-loaded lithium niobate waveguide chip as a photon pair source. Our platform showed an on-chip Pair Generation Rate (PGR) of 34.35 MHz, a generation efficiency of 60.71 MHz/mW, and a Coincidence-to-Accidental Ratio (CAR) of 5939. Erasing and reprinting the waveguides demonstrated the high reproducibility of our method. These results underscore the reliability and industrial potential.

Presenter

Institut für Photonik, Leibniz Univ. Hannover (Germany), Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Application tracks: Photonic Chips , 3D Printing
Author
Institut für Photonik, Leibniz Univ. Hannover (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Author
Alexandra Rittmeier
Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Author
Laura Bollmers
Integrated Quantum Optics Group, Department of Physics, Paderborn University (Germany), Institute for Photonic Quantum Systems, Paderborn University (Germany)
Author
Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Author
Laura Padberg
Integrated Quantum Optics Group (Germany)
Author
Integrated Quantum Optics Group, Department of Physics, Paderborn University (Germany), Institute for Photonic Quantum Systems (Germany)
Author
Integrated Quantum Optics Group (Germany)
Author
Douglas Bremner
ALTER TECHNOLOGY TÜV NORD UK Ltd. (United Kingdom)
Author
Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Author
Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Author
Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)
Presenter/Author
Institut für Photonik, Leibniz Univ. Hannover (Germany), Laser Zentrum Hannover e.V. (Germany), Exzellenzcluster PhoenixD, Leibniz Univ. Hannover (Germany)