Abstract
It is shown that the universal set of quantum logic gates can be realized using solid-state quantum bits based on coherent electron transport in quantum wires. The elementary quantum bits are realized with a proper design of two quantum wires coupled through a potential barrier. Numerical simulations show that (a) a proper design of the coupling barrier allows one to realize any one-qbit rotation and (b) Coulomb interaction between two qbits of this kind allows the implementation of the CNOT gate. These systems are based on a mature technology and seem to be integrable with conventional electronics.
Highlights
It is shown that the universal set of quantum logic gates can be realized using solid-state quantum bits based on coherent electron transport in quantum wires
The elementary quantum bits are realized with a proper design of two quantum wires coupled through a potential barrier
Numerical simulations show that (a) a proper design of the coupling barrier allows one to realize any one-qbit rotation and ( b) Coulomb interaction between two qbits of this kind allows the implementation of the CNOT gate
Summary
Quantum Logic Gates based on Coherent Electron Transport in Quantum Wires It is shown that the universal set of quantum logic gates can be realized using solid-state quantum bits based on coherent electron transport in quantum wires.
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