Strain tuning of a quantum dot strongly coupled to a photonic crystal cavity

Abstract

We demonstrate reversible strain-tuning of a quantum dot strongly coupled to a photonic crystal cavity. We observe an average redshift of 0.45 nm for quantum dots located inside the cavity membrane, achieved with an electric field of 15 kV/cm applied to a piezo-electric actuator. Using this technique, we demonstrate the ability to tune a quantum dot into resonance with a photonic crystal cavity in the strong coupling regime, resulting in a clear anti-crossing. The bare cavity resonance is less sensitive to strain than the quantum dot and shifts by only 0.078 nm at the maximum applied electric field.

References in corpus (5)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Ultrafast all-optical switching by single photons
• The quantum optical Josephson interferometer
• A quantum logic gate between a solid-state quantum bit and a photon
• Electro-elastic tuning of single particles in individual self-assembled quantum dots

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• Electrically driven quantum light emission in electromechanically-tuneable photonic crystal cavities
• Optically tunable photoluminescence and upconversion lasing on a chip
• Post-fabrication tuning of circular Bragg resonators for enhanced emitter-cavity coupling
• Gated InAs quantum dots embedded in surface acoustic wave cavities for low-noise optomechanics