A multilayer multi-configurational approach to efficiently simulate large-scale circuit-based quantum computers on classical machines.
A multilayer multi-configurational approach to efficiently simulate large-scale circuit-based quantum computers on classical machines.
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DOI：
10.1063/5.0013123
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
R. Ellerbrock;T. Martínez
中科院分区：
文献类型：
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作者：
R. Ellerbrock;T. Martínez
采用多层多组态理论框架模拟基于电路的量子计算机。量子加法是在多项式时间内进行的，具有很高的精度。我们展示了精确的数值计算，包括多达一百万个量子比特的纠缠基准。模拟成本可以通过基于熵的纠缠度量来评估。对于所考虑的系统，我们发现纠缠度只随着系统大小的增加而微弱增长。本文的模拟演示了如何在经典的模拟量子计算机上有效地使用低熵区域中的量子算法。
A multilayer multi-configurational theory framework is adapted to simulate circuit-based quantum computers. Quantum addition of superpositions of an exponential number of summands is performed in polynomial time with high accuracy. We demonstrate numerically accurate calculations including up to one million qubits for entangling benchmarks. Simulation cost can be assessed by entropy-based entanglement measures. For the considered systems, we show that the entanglement only grows weakly with the system size. The present simulations demonstrate how quantum algorithms in low-entropy regimes can be used efficiently on classically simulated quantum computers.