Efficient generation of entangled photons via biexciton states

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Entangled photons are special state which cannot be separated between each other. These special photons attract attention of the cutting-edge field of optics, e.g. quantum information. In a semiconductor, the biexciton state can be the source of entangled photons. However, the good scheme of effective generation of entangled photons from biexcitons was not established. In this work, I focused on the structures of semiconductor microcavities, and devised new scheme of entangled photon generation from a semiconductor microcavity. Furthermore, I designed the cavity structures for the new scheme and fabricated the samples. Finally, the optical properties of the samples were investigated experimentally.