Preferred States of Open Electronic Systems
arXiv:1904.10058 · doi:10.1016/j.physleta.2019.06.035
Abstract
System-environment interaction may introduce dynamic destruction of quantum coherence, resulting in a special representation named as pointer states. Here, pointer states of an open electronic system are studied. The decoherence effect is taken into account through two different models which are Büttiker's virtual probe model and 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 evolution. 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.
References in corpus (14)
- Decoherence, einselection, and the quantum origins of the classical
- Time-dependent transport in interacting and non-interacting mesoscopic systems
- Observation of Quantum Interference in Molecular Charge Transport
- Quantum Darwinism
- Quantum limit of decoherence: Environment induced superselection of energy eigenstates
- Universality of Decoherence
- Robustness and diffusion of pointer states
- Non-Canonical Statistics of a Spin-Boson Model: Theory and Exact Monte-Carlo Simulations
- Decoherence and Thermalization
- Entanglement-induced Decoherence and Energy Eigenstates
- Einselection without pointer states
- Preferred States of Decoherence under Intermediate System-Environment Coupling
- Dissipative time-dependent quantum transport theory: quantum interference and phonon induced decoherence dynamics
- Vibration-mediated correlation effects in the transport properties of a benzene molecule