Fully microwave-tunable universal gates in superconducting qubits with linear couplings and fixed transition frequencies

@article{Rigetti2010FullyMU,
  title={Fully microwave-tunable universal gates in superconducting qubits with linear couplings and fixed transition frequencies},
  author={Chad T. Rigetti and Michel H. Devoret},
  journal={Physical Review B},
  year={2010},
  volume={81},
  pages={134507}
}
A register of quantum bits with fixed transition frequencies and weakly coupled to one another through simple linear circuit elements is an experimentally minimal architecture for a small-scale superconducting quantum information processor. Presently, the known schemes for implementing two-qubit gates in this system require microwave signals having amplitudes and frequencies precisely tuned to meet a resonance condition, leaving only the signal phases as free experimentally adjustable… 

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