Stationary Phase Method in Discrete Wigner Functions and Classical Simulation of Quantum Circuits
Stationary Phase Method in Discrete Wigner Functions and Classical Simulation of Quantum Circuits
复制标题
离散维格纳函数中的驻相法和量子电路的经典模拟
DOI:
10.22331/q-2021-07-05-494
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发表时间:
2018
期刊:
影响因子:
6.4
通讯作者:
P. Love
中科院分区:
文献类型:
--
作者:
L. Kocia;P. Love
One of the lowest-order corrections to Gaussian quantum mechanics in infinite-dimensional Hilbert spaces are Airy functions: a uniformization of the stationary phase method applied in the path integral perspective. We introduce a "periodized stationary phase method" to discrete Wigner functions of systems with odd prime dimension and show that the π8 gate is the discrete analog of the Airy function. We then establish a relationship between the stabilizer rank of states and the number of quadratic Gauss sums necessary in the periodized stationary phase method. This allows us to develop a classical strong simulation of a single qutrit marginal on t qutrit π8 gates that are followed by Clifford evolution, and show that this only requires 3t2+1 quadratic Gauss sums. This outperforms the best alternative qutrit algorithm (based on Wigner negativity and scaling as ∼30.8t for 10−2 precision) for any number of π8 gates to full precision.
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影响因子:
2.9
作者:
Huang, Yifei;Love, Peter
通讯作者:
Love, Peter
影响因子:
3.3
作者:
Kocia, Lucas;Love, Peter
通讯作者:
Love, Peter
影响因子:
2.9
作者:
Kocia, Lucas;Huang, Yifei;Love, Peter
通讯作者:
Love, Peter
影响因子:
6.4
作者:
Preskill, John
通讯作者:
Preskill, John
DOI:
10.1088/1751-8121/aafca7
发表时间:
2019
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
作者:
Kocia, Lucas;Love, Peter
通讯作者:
Love, Peter