Permanent tuning of quantum dot transitions to degenerate microcavity resonances

Abstract

We demonstrate a technique for achieving spectral resonance between a polarization-degenerate micropillar cavity mode and an embedded quantum dot transition. Our approach is based on a combination of isotropic and anisotropic tensile strain effected by laser-induced surface defects, thereby providing permanent tuning. Such a technique is a prerequisite for the implementation of scalable quantum information schemes based on solid-state cavity quantum electrodynamics.

arXiv comment3 pages, 3 figures

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• Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide
• Strain-tuning of quantum dot optical transitions via laser-induced surface defects
• Device-independent quantum key distribution with spin-coupled cavities
• Optical modes in oxide-apertured micropillar cavities
• Universal quantum gates on electron-spin qubits with quantum dots inside single-side optical microcavities