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

• Autorzy: Moskal S. , Bednarek S. , Adamowski J.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

semiconductor quantum dot; quantum date operation; controlled-NOT (CNOT) gate

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2004
• Tom: Vol. 8, No 4
• Strony: 591--602
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Moskal S.

• Faculty of Physics and Nuclear Techniques, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland

autor

Bednarek S.

• Faculty of Physics and Nuclear Techniques, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland

autor

Adamowski J.

• Faculty of Physics and Nuclear Techniques, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland

Bibliografia

• [1] Nielsen M A and Chuang I L 2000 Quantum Computation and Quantum Information, Cambridge University Press, UK
• [2] Barenco A, Benett C H, Cleve R, DiVincenzo D P, Margolus N, Shor P, Sleator T, Smolib J A and Weinfurter H 1995 Phys. Rev. A 52 3457
• [3] Feynman R P 1986 Foundations of Physics 16 507
• [4] Barenco A, Deutsch D, Eckert A and Jozsa R 1995 Phys. Rev. Lett. 74 4083
• [5] Jacak L, Hawrylak P and Wójs A 1998 Quantum Dots, Springer-Verlag, Berlin
• [6] Sanders G D, Kim K W and Holton W C 2000 Phys. Rev. B 61 7526
• [7] Bednarek S, Szafran B, Chwiej T and Adamowski J 2003 Phys. Rev. B 68 045328
• [8] Davies K T R, Flocard H Krieger S and Weiss M S 1980 Nucl. Phys. A 342 111
• [9] Askar A and Cakmak A S 1978 J. Chem. Phys. 68 2794