  Two of the major obstacles to achieve quantum computing (QC) are (i)
scalability to many qubits and (ii) controlled connectivity between any
selected qubits. Using Josephson charge qubits, here we propose an
experimentally realizable method to efficiently solve these two central
problems. Since any two charge qubits can be effectively coupled by an
experimentally accessible inductance, the proposed QC architecture is scalable.
In addition, we formulate an efficient and realizable QC scheme that requires
only one (instead of two or more) two-bit operation to implement conditional
gates.
