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We report lateral quantum coupling between two self-assembled InGaAs/GaAs quantum dots. Single-photon photoluminescence emission has been observed from this quantum dot molecule and the level of coupling can be controlled using a static electric field.
We present a quantum dot structure fabricated by the lithographic positioning, which can be used as a prototype of the quantum dot register for quantum computing. Using simple model calculations we show that parameters of our quantum dot structure are very close to the ones required for two possible embodiments of a quantum computer. Results of numerical simulation of the quantum dot register, as...
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