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

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 $g_{\mathrm{her}}^{(2)}(0)=0.10\pm 0.02$ 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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Cited by in corpus (9)

• Nonlinear integrated quantum photonics with AlGaAs
• Engineering two-photon wavefunction and exchange statistics in a semiconductor chip
• Time-frequency as quantum continuous variables
• Pure Single Photons from Scalable Frequency Multiplexing
• Measuring higher-order photon correlations of faint quantum light: a short review
• Hybrid III-V/Silicon Quantum Photonic Device Generating Broadband Entangled Photon Pairs
• Difference-frequency generation in an AlGaAs Bragg-reflection waveguide using an on-chip electrically-pumped quantum dot laser
• Broadband biphoton generation and polarization splitting in a monolithic AlGaAs chip
• Photon-number parity of heralded single photons from a Bragg-reflection waveguide reconstructed loss-tolerantly via moment generating function