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

doi:10.1117/12.2620686

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

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.

Conference Presentation

Citation Download Citation

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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