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-qubit 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 qubits. A number of runs have been perfomed using a time-dependent 2D Schroedinger solver.
TWO-QBIT GATES BASED ON COUPLED QUANTUM WIRES / S., Reggiani; A., Bertoni; Bordone, Paolo; Brunetti, Rossella; Jacoboni, Carlo; M., Rudan; G., Baccarani. - STAMPA. - 1:(2000), pp. 184-187. (Intervento presentato al convegno International Conference on Simulation of Semiconductor Processes and Devices tenutosi a Seattle, WA, USA, nel 2000) [10.1109/SISPAD.2000.871238].