Kabushiki Kaisha Toshiba

Sokratis Kalliakos

Andrew James Shields

Joanna Krystyna Skiba-Szymanska

David Julian Peter Ellis

An optical device comprising: a photonic crystal structure, comprising: a layer of a first material, the layer comprising a quantum emitter; and a plurality of regions of a second material in the layer of the first material, the regions arranged in a regular lattice having at least one region missing from the lattice so that a defect is formed, wherein the quantum emitter is located in the defect part of the photonic crystal structure; wherein the second material has a different refractive index to the first material; and an electrode which is electrically contacted to only the defect part of the photonic crystal structure.

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Cambridge, United Kingdom

Sokratis Kalliakos