Digital quantum simulation of non-equilibrium quantum many-body systems
Digital quantum simulation of non-equilibrium quantum many-body systems
复制标题
非平衡量子多体系统的数字量子模拟
DOI：
10.1007/s11128-021-03079-z
复制
发表时间：
2021-04-01
影响因子：
2.5
通讯作者：
Zhu, Jian-Xin
中科院分区：
文献类型：
--
作者：
Fauseweh, Benedikt;Zhu, Jian-Xin
数字量子模拟使用量子计算机的能力来确定量子系统的动力学，这超出了现代经典计算机的可计算性。量子多体系统中的非平衡动力学描述是这一领域中一个非常具有挑战性的任务。在这里，我们使用IBM量子计算机来模拟少数自旋和费米子系统的非平衡动力学。我们的研究结果表明，结合误差缓解，噪声外推和优化的初始状态准备，可以解决现代量子器件的最重要的缺点。我们模拟的系统展示了在不久的将来光-物质相互作用的大规模量子模拟的潜力。
Digital quantum simulation uses the capabilities of quantum computers to determine the dynamics of quantum systems, which are beyond the computability of modern classical computers. A notoriously challenging task in this field is the description of non-equilibrium dynamics in quantum many-body systems. Here, we use the IBM quantum computers to simulate the non-equilibrium dynamics of few spin and fermionic systems. Our results reveal that with a combination of error mitigation, noise extrapolation and optimized initial state preparation, one can tackle the most important drawbacks of modern quantum devices. The systems we simulate demonstrate the potential for large-scale quantum simulations of light-matter interactions in the near future.