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SYSTEMS AND METHODS FOR CALCULATING THE GROUND STATE OF NON-DIAGONAL HAMILTONIANS
SYSTEMS AND METHODS FOR CALCULATING THE GROUND STATE OF NON-DIAGONAL HAMILTONIANS
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机译:计算非对角线哈密顿量的地面状态的系统和方法
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摘要
A hybrid computing system comprising a digital and an analog processor calculates the ground energy state of a non-diagonal Hamiltonian via diagonalization of the Hamiltonian in different bases and reverse annealing. A first basis is rotated to render part of the Hamiltonian diagonal, then the quantum processor evolves backwards until a value s* of the normalized evolution coefficient. Another basis is rotated to render another part of the Hamiltonian diagonal and the quantum processor evolves backwards again until s*. The bases can be rotated via discrete Fourier transform. The quantum processor may pause for a time t after each backward evolution. The ground state energy is calculated using the final ground states.
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