Electro-optic polarization tuning of microcavities with a single quantum dot

Abstract

We present an oxide aperture microcavity with embedded quantum dots that utilizes a three contact design to independently tune the quantum dot wavelength and birefringence of the cavity modes. A polarization splitting tuning of $\sim$5 GHz is observed. For typical microcavity polarization splittings, the method can be used to achieve perfect polarization degeneracy that is required for many polarization-based implementations of photonic quantum gates. The embedded quantum dot wavelength can be tuned into resonance with the cavity, independent of the polarization tuning.

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• Tuning the mode-splitting of a semiconductor microcavity with uniaxial stress
• Hyperparallel transistor, router and dynamic random access memory with unity fidelities
• Extended polarized semiclassical model for quantum-dot cavity QED and its application to single-photon sources