A proposal for the realization of universal quantum gates via superconducting qubits inside a cavity

• A family of quantum logic gates is proposed via SC-qubits coupled to a cavity.
• Three- and two-qubit operations are generated via a classical field with the flux.
• Numerical simulations and calculation of the fidelity are used to prove the success of these operations for these gates.

A family of quantum logic gates is proposed via superconducting (SC) qubits coupled to a SC-cavity. The Hamiltonian for SC-charge qubits inside a single mode cavity is considered. Three- and two-qubit operations are generated by applying a classical magnetic field with the flux. Therefore, a number of quantum logic gates are realized. Numerical simulations and calculation of the fidelity are used to prove the success of these operations for these gates.