Quantum logic gates with controllable and selective interaction for   superconducting charge qubits via a nanomechanical resonator
  In this paper, we propose a scheme to implement two-qubit logic gates with a controllable and selective interaction in a scalable superconducting circuit of charge qubits. A nanomechanical resonator is used as a data bus to connect qubits. It is indicated that a controllable interaction between qubits can be obtained by making use of the data bus. It is shown that a selective interaction between qubits can be realized when many qubits are involved in the system under our consideration. 
Jie-Qiao Liao, Qin-Qin Wu and Le-Man Kuang