On-chip III-V monolithic integration of heralded single photon sources and beamsplitters

J. Belhassen, F. Baboux, Q. Yao, M. Amanti, I. Favero, A. Lemaître, W. S. Kolthammer, I. A. Walmsley, S. Ducci

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18 Scopus citations


We demonstrate a monolithic III-V photonic circuit combining a heralded single photon source with a beamsplitter, at room temperature and telecom wavelength. Pulsed parametric down-conversion in an AlGaAs waveguide generates counterpropagating photons, one of which is used to herald the injection of its twin into the beamsplitter. We use this configuration to implement an integrated Hanbury-Brown and Twiss experiment, yielding a heralded second-order correlation gher(2)(0)=0.10±0.02 that confirms single-photon operation. The demonstrated generation and manipulation of quantum states on a single III-V semiconductor chip opens promising avenues towards real-world applications in quantum information.

Original languageEnglish
Article number071105
JournalApplied Physics Letters
Issue number7
StatePublished - 12 Feb 2018
Externally publishedYes

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© 2018 Author(s).


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