Preferred states of open electronic systems
Abstract
System-environment interaction may introduce dynamic destruction of quantum coherence, resulting in a special representation named as pointer states. In this work, pointer states of an open electronic system are studied. The decoherence effect is taken into account through two different ways which are Büttiker's virtual probe model and strong electron-phonon interaction in the polaron picture. The pointer states of the system with different coupling strength are investigated. Here, the pointer states are identified by tracking the eigenstates of the density matrix in real-time propagation. It is found that the pointer states can emerge for arbitrary coupling strength. And the pointer states deform to the eigenstates of the system in the strong coupling limit, which indicates the vanish of quantumness in the strong coupling limit.
- Authors:
-
[1];
[2]
- South China Normal Univ., Guangzhou (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1532733
- Alternate Identifier(s):
- OSTI ID: 1702748
- Report Number(s):
- LA-UR-19-26160
Journal ID: ISSN 0375-9601
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics Letters. A
- Additional Journal Information:
- Journal Volume: 383; Journal Issue: 24; Journal ID: ISSN 0375-9601
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Decoherence; Electron-phonon interaction; Quantum transport; Molecular electronics; Non-equilibrium Green's function; Pointer states
Citation Formats
Jiang, HaoXiang, and Zhang, Yu. Preferred states of open electronic systems. United States: N. p., 2019.
Web. doi:10.1016/j.physleta.2019.06.035.
Jiang, HaoXiang, & Zhang, Yu. Preferred states of open electronic systems. United States. https://doi.org/10.1016/j.physleta.2019.06.035
Jiang, HaoXiang, and Zhang, Yu. Thu .
"Preferred states of open electronic systems". United States. https://doi.org/10.1016/j.physleta.2019.06.035. https://www.osti.gov/servlets/purl/1532733.
@article{osti_1532733,
title = {Preferred states of open electronic systems},
author = {Jiang, HaoXiang and Zhang, Yu},
abstractNote = {System-environment interaction may introduce dynamic destruction of quantum coherence, resulting in a special representation named as pointer states. In this work, pointer states of an open electronic system are studied. The decoherence effect is taken into account through two different ways which are Büttiker's virtual probe model and strong electron-phonon interaction in the polaron picture. The pointer states of the system with different coupling strength are investigated. Here, the pointer states are identified by tracking the eigenstates of the density matrix in real-time propagation. It is found that the pointer states can emerge for arbitrary coupling strength. And the pointer states deform to the eigenstates of the system in the strong coupling limit, which indicates the vanish of quantumness in the strong coupling limit.},
doi = {10.1016/j.physleta.2019.06.035},
journal = {Physics Letters. A},
number = 24,
volume = 383,
place = {United States},
year = {Thu Jun 27 00:00:00 EDT 2019},
month = {Thu Jun 27 00:00:00 EDT 2019}
}
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Fig. 1: Illustration of benzene molecule connected to two electrodes and breathing phonon mode (blue arrow) of a benzene molecule.
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