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Simulation of matrix product states for dissipation and thermalization dynamics of open quantum systems

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Article number015002
Number of pages11
JournalJournal of Physics Communications
Volume4
Issue number1
DOIs
Publication statusPublished - 2020
Publication typeA1 Journal article-refereed

Abstract

We transform the system/reservoir coupling model into a one-dimensional semi-infinite discrete chain through unitary transformation to simulate the open quantum system numerically with the help of time evolving block decimation (TEBD) algorithm. We apply the method to study the dynamics of dissipative systems. We also generate the thermal state of a multimode bath using minimally entangled typical thermal state (METTS) algorithm, and investigate the impact of the thermal bath on an empty system. For both cases, we give an extensive analysis of the impact of the modeling and simulation parameters, and compare the numerics with the analytics.

ASJC Scopus subject areas

Keywords

  • Minimally entangled typical thermal states, Open quantum system, Thermal bath, Time-evolving block decimation algorithm

Publication forum classification

Field of science, Statistics Finland