A variational eigenvalue solver on a photonic quantum processor.
A variational eigenvalue solver on a photonic quantum processor.
复制标题
光子量子处理器上的变分特征值求解器。
DOI:
10.1038/ncomms5213
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发表时间:
2014-07-23
影响因子:
16.6
通讯作者:
O'Brien, Jeremy L.
中科院分区:
文献类型:
--
作者:
Peruzzo, Alberto;McClean, Jarrod;Shadbolt, Peter;Yung, Man-Hong;Zhou, Xiao-Qi;Love, Peter J.;Aspuru-Guzik, Alan;O'Brien, Jeremy L.
Quantum computers promise to efficiently solve important problems that are intractable on a conventional computer. For quantum systems, where the physical dimension grows exponentially, finding the eigenvalues of certain operators is one such intractable problem and remains a fundamental challenge. The quantum phase estimation algorithm efficiently finds the eigenvalue of a given eigenvector but requires fully coherent evolution. Here we present an alternative approach that greatly reduces the requirements for coherent evolution and combine this method with a new approach to state preparation based on ansätze and classical optimization. We implement the algorithm by combining a highly reconfigurable photonic quantum processor with a conventional computer. We experimentally demonstrate the feasibility of this approach with an example from quantum chemistry—calculating the ground-state molecular energy for He–H+. The proposed approach drastically reduces the coherence time requirements, enhancing the potential of quantum resources available today and in the near future. Quantum computers promise to efficiently solve problems that would be practically impossible with a normal computer. Peruzzo et al. develop a variational computation approach that uses any available quantum resources and, with a photonic quantum processing unit, find the ground-state molecular energy of He–H+.
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影响因子:
1.6
作者:
Kempe, J;Kitaev, A;Regev, O
通讯作者:
Regev, O
影响因子:
8.6
作者:
Harrow, Aram W.;Hassidim, Avinatan;Lloyd, Seth
通讯作者:
Lloyd, Seth
影响因子:
56.9
作者:
Aspuru-Guzik, A;Dutoi, AD;Head-Gordon, M
通讯作者:
Head-Gordon, M
影响因子:
8.6
作者:
Lloyd, S
通讯作者:
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影响因子:
8.6
作者:
Abrams, DS;Lloyd, S
通讯作者:
Lloyd, S