Physics – Quantum Physics
Scientific paper
2010-07-19
New Journal of Physics, 12 (2010) 093025
Physics
Quantum Physics
This is a new version. Some typos in the New Journal of Physics version have been corrected
Scientific paper
10.1088/1367-2630/12/9/093025
Adiabaticity of quantum evolution is important in many settings. One example is the adiabatic quantum computation. Nevertheless, up to now, there is no effective method to test the adiabaticity of the evolution when the eigenenergies of the driven Hamiltonian are not known. We propose a simple method to check adiabaticity of a quantum process for an arbitrary quantum system. We further propose a operational method for finding a uniformly adiabatic quench scheme based on Kibble-Zurek mechanism for the case when the initial and the final Hamiltonians are given. This method should help in implementing adiabatic quantum computation.
Quan H. T.
Zurek Wojciech Hubert
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