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Updated: May 7, 2026
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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
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Summary
We modeled an electrically pumped nonlinear source for spontaneous parametric down-conversion using InAs quantum dots in an AlGaAs waveguide, achieving efficient light generation at 1900 nm.
Area of Science:
- Nonlinear optics
- Semiconductor device physics
- Quantum optics
Background:
- Spontaneous parametric down-conversion (SPDC) is a key quantum light source.
- AlGaAs waveguides offer nonlinear optical properties.
- Quantum dots provide efficient light emission.
Purpose of the Study:
- To model an electrically pumped nonlinear source for SPDC.
- To investigate the use of InAs quantum dots in an AlGaAs Bragg waveguide.
- To achieve phase matching for signal and idler modes at 1900 nm.
Main Methods:
- Numerical modeling of an AlGaAs single-sided Bragg waveguide.
- Incorporation of InAs quantum dots for laser emission at 950 nm.
- Phase matching analysis for cross-polarized total-internal-reflection modes.
Main Results:
- The model demonstrates efficient SPDC generation.
- Quantum dots are shown to be crucial for phase-matching.
- The source exhibits tuning capabilities.
Conclusions:
- Electrically pumped nonlinear sources for SPDC are feasible.
- AlGaAs waveguides with quantum dots are promising for integrated quantum optics.
- This device offers tunable, efficient entangled photon pair generation.
