Difference-frequency generation in an AlGaAs Bragg-reflection waveguide using an on-chip electrically-pumped quantum dot laser

Abstract

Nonlinear frequency conversion is ubiquitous in laser engineering and quantum information technology. A long-standing goal in photonics is to integrate on-chip semiconductor laser sources with nonlinear optical components. Engineering waveguide lasers with spectra that phase-match to nonlinear processes on the same device is a formidable challenge. Here, we demonstrate difference-frequency generation in an AlGaAs Bragg reflection waveguide which incorporates the gain medium for the pump laser in its core. We include quantum dot layers in the AlGaAs waveguide that generate electrically driven laser light at ~790 nm, and engineer the structure to facilitate nonlinear processes at this wavelength. We perform difference-frequency generation between 1540 nm and 1630 nm using the on-chip laser, which is enabled by the broad modal phase-matching of the AlGaAs waveguide, and measure normalized conversion efficiencies up to $(0.64\pm 0.21)$ %/W/cm${}^2$. Our work demonstrates a pathway towards devices that utilize on-chip active elements and strong optical nonlinearities to enable highly integrated photonic systems-on-chip.

References in corpus (17)

• Photonic quantum technologies
• Quantum computational advantage using photons
• Optical Quantum Computing
• Detection-Loophole-Free Test of Quantum Nonlocality, and Applications
• Ultra-low threshold, electrically pumped quantum dot photonic crystal nanocavity laser
• Ultra-efficient frequency comb generation in AlGaAs-on-insulator microresonators
• Semiconductor devices for entangled photon pair generation: a review
• Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime
• Light-matter entanglement over 50 km of optical fibre
• An electrically injected photon-pair source at room temperature
• Two-photon interference in the telecom C-band after frequency conversion of photons from remote quantum emitters
• Generation of polarization-entangled photon pairs in a Bragg reflection waveguide
• Monolithic on-chip integration of semiconductor waveguides, beamsplitters and single-photon sources
• On-chip III-V monolithic integration of heralded single photon sources and beamsplitters
• Modally Resolved Fabry-Perot Experiment with Semiconductor Waveguides
• Temporally versatile polarization entanglement from Bragg-reflection waveguides
• Understanding photoluminescence in semiconductor Bragg-reflection waveguides: Towards an integrated, GHz-rate telecom photon pair source