Wyniki wyszukiwania - BazTech

Ograniczanie wyników

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

2 2004

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: semiconductor quantum dot

Sortuj według:

Ogranicz wyniki do:

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.

A Numerical solution of the Poisson-Schrodinger problem for a vertical gated quantum dot

Lis K., Bednarek S., Adamowski J.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2004

Vol. 8, No 4

603-611

We present a numerical solution of the Poisson-Schrodinger problem for a semiconductor nanostructure containing a single quantum dot. The main outcome of our work is the lateral confinement potential, which determines the electronic properties of the nanodevice. We study the real nanodevice with cylindrical symmetry, which allows us to solve the three-dimensional problem on a two-dimensional mesh. We discuss the self-consistency of the solution with respect to the distribution of ionized donors inside the nanodevice.