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Title: 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:
ORCiD logo [1]; ORCiD logo [2]
  1. South China Normal Univ., Guangzhou (China)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1532733
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 Name: Physics Letters. A; Journal ID: ISSN 0375-9601
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
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. doi:10.1016/j.physleta.2019.06.035.
Jiang, HaoXiang, and Zhang, Yu. Thu . "Preferred states of open electronic systems". United States. doi:10.1016/j.physleta.2019.06.035.
@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 = ,
volume = ,
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
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This content will become publicly available on June 27, 2020
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