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Heterogeneous integration for on-chip quantum photonic circuits with single quantum dot devices
Marcelo Davanco1, Jin Liu2,3,4, Luca Sapienza5,6
1Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA. marcelo.davanco@nist.gov.
Nature Communications
|October 14, 2017
Summary
This study introduces a scalable on-chip photonic integration platform for quantum technologies. It enables efficient light coupling between quantum dots and silicon nitride waveguides, overcoming scalability challenges in quantum photonics.
Area of Science:
- Quantum photonics
- Solid-state quantum emitters
- Nanophotonics
Background:
- Single-quantum emitters are crucial for photonic quantum technologies like single-photon sources and quantum gates.
- Current platforms face scalability issues despite enabling strong light-matter interactions and low-loss interfaces.
Purpose of the Study:
- To develop a scalable on-chip heterogeneous photonic integration platform.
- To enable direct integration of quantum dots in GaAs with low-loss Si3N4 waveguides.
Main Methods:
- Heterogeneous integration of GaAs waveguides/cavities with InAs/GaAs quantum dots and Si3N4 waveguides.
- Demonstration of efficient optical interface between Si3N4 waveguides and quantum dots.
Main Results:
- Achieved highly efficient optical interface performance, nearing optimized individual material devices.
- Demonstrated quantum dot radiative rate enhancement within microcavities.
- Established a pathway towards the non-perturbative strong-coupling regime.
Conclusions:
- The developed platform offers a scalable solution for on-chip quantum photonics.
- It facilitates strong light-matter coupling and low-loss interfaces essential for quantum technologies.
- This work advances the integration of quantum dots with photonic circuits for practical quantum applications.
