Preferred states of open electronic systems |
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| Authors: | HaoXiang Jiang Yu Zhang |
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| Affiliation: | 1. Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, 510006, China;2. Physics and Chemistry of Materials, Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA |
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| 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. 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. |
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| Keywords: | Corresponding author. Decoherence Electron-phonon interaction Quantum transport Molecular electronics Non-equilibrium Green's function Pointer states |
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