Controlled-not gate with weakly coupled qubits: Dependence of fidelity on the form of interaction
Controlled-not gate with weakly coupled qubits: Dependence of fidelity on the form of interaction
An approach to the construction of the controlled-not quantum logic gate for a four-dimensional coupled-qubit model with weak but otherwise arbitrary coupling has been given recently [M. R. Geller et al., Phys. Rev. A 81, 012320 (2010)]. How does the resulting fidelity depend on the form of qubit-qubit coupling? In …