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Universal quantum computation with a nonlinear oscillator network

Universal quantum computation with a nonlinear oscillator network

We theoretically show that a nonlinear oscillator network with controllable parameters can be used for universal quantum computation. The initialization is achieved by a quantum-mechanical bifurcation based on quantum adiabatic evolution, which yields a Schr\"odinger cat state. All the elementary quantum gates are also achieved by quantum adiabatic evolution, in …