Two-qbit gates based on coupled quantum wires

Author

Reggiani, S. ; Bertoni, A. ; Bordone, P. ; Brunetti, R. ; Jacoboni, C. ; Rudan, M. ; Baccarani, G.

Author_Institution

Dipartimento di Elettronica, Bologna Univ., Italy

fYear

2000

fDate

2000

Firstpage

184

Lastpage

187

Abstract

A solid-state implementation of a set of one- and two-qbit gates for quantum computing is proposed. The qbit is defined as the state of an electron running along two quantum wires, suitably coupled through a potential barrier with variable height and/or width. Single-qbit gates are implemented using the coupling between the two wires. The two-qbit gates have been designed using a Coulomb coupler to induce a mutual phase modulation of the two qbits. A number of runs have been performed using a time-dependent 2D Schrodinger solver

Keywords

Schrodinger equation; phase modulation; quantum computing; quantum gates; semiconductor quantum wires; Coulomb coupler; coupled quantum wires; electron state; potential barrier coupling; potential barrier height; potential barrier width; qbit mutual phase modulation; quantum computing; quantum wires; single-qbit gates; solid-state implementation; time-dependent 2D Schrodinger solver; two-qbit gates; Electrons; Jacobian matrices; Logic gates; Mutual coupling; Phase modulation; Quantum computing; Quantum mechanics; Semiconductor devices; Solid state circuits; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Simulation of Semiconductor Processes and Devices, 2000. SISPAD 2000. 2000 International Conference on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-6279-9

Type

conf

DOI

10.1109/SISPAD.2000.871238

Filename

871238