Issues of practical realization of a quantum dot register for quantum computing

We present a quantum dot structure fabricated by the lithographic positioni ng, which can be used as a prototype of the quantum dot register for quantu m 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 well as discussion of materials and technological issues of fabrication of quantum logic gates are also presented.