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3 June 2022 On-chip III-V monolithic integration of entangled photons pairs sources and polarizing beamsplitters
Maria Amanti, Félicien Appas, Aristide Lemaı̂tre, Martina Morassi, Florent Baboux, Sara Ducci
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Proceedings Volume PC12133, Quantum Technologies 2022; PC1213308 (2022) https://doi.org/10.1117/12.2620686
Event: SPIE Photonics Europe, 2022, Strasbourg, France
Abstract
Integrated quantum photonics is a key tool towards large scale quantum technologies. In this work we present an AlGaAs-based photonic circuit for on-chip generation and manipulation of broadband polarization-entangled photon pairs. The quantum state is generated by Type-II spontaneous parametric down conversion in AlGaAs Bragg reflection waveguides at telecom wavelengths and room temperature. Polarization entangled photons are manipulated over a frequency band of around 50 nm by an integrated polarizing beam splitter. We demonstrate Hong-Ou-Mandel visibility of 80% for a quantum device where the photon pairs generation and manipulation are implemented in a single chip.
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Maria Amanti, Félicien Appas, Aristide Lemaı̂tre, Martina Morassi, Florent Baboux, and Sara Ducci "On-chip III-V monolithic integration of entangled photons pairs sources and polarizing beamsplitters", Proc. SPIE PC12133, Quantum Technologies 2022, PC1213308 (3 June 2022); https://doi.org/10.1117/12.2620686
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KEYWORDS
Photons
Beam splitters
Polarization
Photonic integrated circuits
Photonics
Quantum information
Waveguides
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