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1 TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

1 2004

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Computer simulation of the working cycle of a quantum controlled-NOT gate with two coupled quantum dots

Moskal S., Bednarek S., Adamowski J.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2004

Vol. 8, No 4

591-602

We discuss a possible realization of a quantum controlled-NOT gate with the use of two coupled quantum dots. Transitions between quantum states of a computational basis are driven by the microwave ?-pulse. The parameters of the proposed nanodevice have been optimized in order to make the operation cycle of the gate as short as possible. Numerical solutions of the time-dependent Schrodinger equation allow us to simulate transitions between the quantum states which correspond to the subsequent stages of the gate's operation. The performed time-dependent simulations are a test of realizability of the quantum controlled-NOT gate in the nanodevice.