Fixed Depth Hamiltonian Simulation via Cartan Decomposition.
Fixed Depth Hamiltonian Simulation via Cartan Decomposition.
复制标题
通过嘉当分解固定深度哈密顿模拟。
DOI:
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发表时间:
2021
影响因子:
8.6
通讯作者:
A. Kemper
中科院分区:
文献类型:
--
作者:
Efekan Kökcü;Thomas Steckmann;Yan Wang;J. Freericks;E. Dumitrescu;A. Kemper
Simulating quantum dynamics on classical computers is challenging for large systems due to the significant memory requirements. Simulation on quantum computers is a promising alternative, but fully optimizing quantum circuits to minimize limited quantum resources remains an open problem. We tackle this problem by presenting a constructive algorithm, based on Cartan decomposition of the Lie algebra generated by the Hamiltonian, which generates quantum circuits with time-independent depth. We highlight our algorithm for special classes of models, including Anderson localization in one-dimensional transverse field XY model, where O(n^{2})-gate circuits naturally emerge. Compared to product formulas with significantly larger gate counts, our algorithm drastically improves simulation precision. In addition to providing exact circuits for a broad set of spin and fermionic models, our algorithm provides broad analytic and numerical insight into optimal Hamiltonian simulations.
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影响因子:
0.9
作者:
D. D’Alessandro;J. Hartwig
通讯作者:
D. D’Alessandro;J. Hartwig
影响因子:
7.6
作者:
Gard, Bryan T.;Zhu, Linghua;Barnes, Edwin
通讯作者:
Barnes, Edwin
影响因子:
6.4
作者:
Preskill, John
通讯作者:
Preskill, John
DOI:
10.1016/j.sysconle.2021.104913
发表时间:
2020-06
期刊:
Syst. Control. Lett.
影响因子:
--
作者:
F. Albertini;D. D’Alessandro
通讯作者:
F. Albertini;D. D’Alessandro