A1 Journal article (refereed)
Simulation of Matrix Product States For Dissipation and Thermalization Dynamics of Open Quantum Systems (2020)
Agasti, S. (2020). Simulation of Matrix Product States For Dissipation and Thermalization Dynamics of Open Quantum Systems. Journal of Physics Communications, 4(1), Article 015002. https://doi.org/10.1088/2399-6528/ab6141
JYU authors or editors
Publication details
All authors or editors: Agasti, Souvik
Journal or series: Journal of Physics Communications
eISSN: 2399-6528
Publication year: 2020
Volume: 4
Issue number: 1
Article number: 015002
Publisher: Institute of Physics Publishing Ltd.
Place of Publication: Bristol
Publication country: United Kingdom
Publication language: English
DOI: https://doi.org/10.1088/2399-6528/ab6141
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67671
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.
Keywords: quantum physics; algorithms
Free keywords: open quantum system; thermal bath; time-evolving block decimation algorithm; minimally entangled typical thermal states
Contributing organizations
Related projects
- Quantum properties of optomechanical systems
- Massel, Francesco
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2020
JUFO rating: 1