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政大機構典藏 > 理學院 > 應用物理研究所 > 期刊論文 > Item 140.119/140388

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/140388

Title:	Digital quantum simulation of dynamical topological invariants on near-term quantum computers
Authors:	許琇娟 Hsu, Hsiu-Chuan Chang, Huai-Chun
Contributors:	應物所
Keywords:	Quantum simulation;Berry phase;Topological insulator
Date:	2022-01
Issue Date:	2022-06-24 15:30:57 (UTC+8)
Abstract:	Programmable quantum processors are suitable platforms for simulating quantum systems, of which topological phases are of particular interest. We simulate the quench dynamics of a one-dimensional system on IBM Q devices. The topological properties of the dynamics are described by the dynamical topological invariants, the dynamical winding number, and the time-dependent Berry phase, which are simulated with the quantum circuit model. The results show that despite the noise present in the current quantum computers, the dynamical topological invariants are robust. Moreover, to investigate the influence of open quantum system, we analytically solve the master equation in Lindblad form and show that the dynamical winding number and the change in Berry phase are not affected by the dissipation. This study sheds light on the robustness of topological phases on the noisy intermediate-scale quantum computers.
Relation:	Quantum information processing, 21, Article number: 41
Data Type:	article
DOI 連結:	https://doi.org/10.1007/s11128-021-03362-z
DOI:	10.1007/s11128-021-03362-z
Appears in Collections:	[應用物理研究所 ] 期刊論文

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