Universal quantum computation with a nonlinear oscillator network
arXiv:1605.03250 · doi:10.1103/PhysRevA.93.050301
Abstract
It has recently been shown that a parametrically driven oscillator with Kerr nonlinearity yields a Schrödinger cat state via quantum adiabatic evolution through its bifurcation point and a network of such nonlinear oscillators can be used for solving combinatorial optimization problems by bifurcation-based adiabatic quantum computation [H. Goto, Sci. Rep. \textbf{6}, 21686 (2016)]. Here we theoretically show that such a nonlinear oscillator network with controllable parameters can also be used for universal quantum computation. The initialization is achieved by a quantum-mechanical bifurcation based on quantum adiabatic evolution, which yields a Schrödinger cat state. All the elementary quantum gates are also achieved by quantum adiabatic evolution, in which dynamical phases accompanying the adiabatic evolutions are controlled by the system parameters. Numerical simulation results indicate that high gate fidelities can be achieved, where no dissipation is assumed.
5 pages, 4 figures
References in corpus (4)
Cited by in corpus (75)
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