Quantum Linear System Solver Based on Time-optimal Adiabatic Quantum Computing and Quantum Approximate Optimization Algorithm
Quantum Linear System Solver Based on Time-optimal Adiabatic Quantum Computing and Quantum Approximate Optimization Algorithm
复制标题
基于时间最优绝热量子计算和量子近似优化算法的量子线性系统求解器
DOI:
10.1145/3498331
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Lin, Lin
中科院分区:
文献类型:
--
作者:
An, Dong;Lin, Lin
We demonstrate that with an optimally tuned scheduling function, adiabatic quantum computing (AQC) can readily solve a quantum linear system problem (QLSP) withO(κ poly(log (κ ε))) runtime, where κ is the condition number, and ε is the target accuracy. This is near optimal with respect to both κ and ε, and is achieved without relying on complicated amplitude amplification procedures that are difficult to implement. Our method is applicable to general non-Hermitian matrices, and the cost as well as the number of qubits can be reduced when restricted to Hermitian matrices, and further to Hermitian positive definite matrices. The success of the time-optimal AQC implies that the quantum approximate optimization algorithm (QAOA) with an optimal control protocol can also achieve the same complexity in terms of the runtime. Numerical results indicate that QAOA can yield the lowest runtime compared to the time-optimal AQC, vanilla AQC, and the recently proposed randomization method.
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影响因子:
6.4
作者:
Lin Lin-Lin;Yu Tong
通讯作者:
Lin Lin-Lin;Yu Tong
DOI:
10.1137/1.9780898718003
发表时间:
2003-05
期刊:
--
影响因子:
--
作者:
Y. Saad
通讯作者:
Y. Saad
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
G. Low;N. Wiebe
通讯作者:
N. Wiebe
影响因子:
1
作者:
S. Boixo;E. Knill;R. Somma
通讯作者:
R. Somma
影响因子:
12.5
作者:
Bukov, Marin;Day, Alexandre G. R.;Mehta, Pankaj
通讯作者:
Mehta, Pankaj