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

doi:10.1063/1.5015951

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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Abstract

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 language	English
Article number	071105
Journal	Applied Physics Letters
Volume	112
Issue number	7
DOIs	https://doi.org/10.1063/1.5015951
State	Published - 12 Feb 2018
Externally published	Yes

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© 2018 Author(s).

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abstract = "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.",

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AU - Baboux, F.

AU - Yao, Q.

AU - Amanti, M.

AU - Favero, I.

AU - Lemaître, A.

AU - Kolthammer, W. S.

AU - Walmsley, I. A.

AU - Ducci, S.

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AB - 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.

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

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