A new statistical model for the combined effects of decoherence, energy redistribution and dissipation on electron transport in large quantum systems is introduced. The essential idea is to consider the electron phase information to be lost only at randomly chosen regions with an average distance corresponding to the decoherence length. In these regions the electron's energy can be unchanged or redistributed within the electron system or dissipated to a heat bath. The different types of scattering and the decoherence leave distinct fingerprints in the energy distribution functions. They can be interpreted as a mixture of unthermalized and thermalized electrons. In the case of weak decoherence, the fraction of thermalized electrons show electrical and thermal contact resistances. In the regime of incoherent transport the proposed model is equivalent to a Boltzmann equation. The model is applied to experiments with carbon nanotubes. The excellent agreement of the model with the experimental data allows to determine the scattering lengths of the system.
Decoherence and lead induced inter-dot coupling in nonequilibrium electron transport through interacting quantum dots: A hierarchical quantum master equation approach
A comparative study of perturbative and nonequilibrium Green's function approaches for Floquet sidebands in periodically driven quantum systems
Georg-August-University Göttingen（哥廷根大学）；Paul Scherrer Institute（保罗谢勒研究所）；University of Fribourg（弗里堡大学）；University of Bremen（不来梅大学）；Max Planck Institute for the Structure and Dynamics of Matter（物质结构与动力学马克斯·普朗克研究所）；Philipps-Universität Marburg（马尔堡菲利普斯大学）
Decoherence Resilience of the Non-Hermitian Skin Effect
Anhui University（安徽大学）；Southeast University（东南大学）；Politecnico di Milano（米兰理工大学）；IFISC (UIB-CSIC), Instituto de Fisica Interdisciplinary Sistemas Complejos（复杂系统跨物理研究所 (UIB-CSIC)）
Electron-phonon coupling in metallic carbon nanotubes: Dispersionless electron propagation despite dissipation
最近的研究[Rosati，Dolcini和Rossi，Appl. Phys. Lett. 106，243101（2015）]已经预测，虽然在半导体单壁碳纳米管（SWNT）中，电子波包经历常规材料的典型空间扩散，但在金属SWNT中，即使在存在电子-声子耦合的情况下，其形状在室温下保持基本上不变直到微米距离。在这里，通过利用Lindblad为基础的密度矩阵的方法，使我们能够考虑耗散和退相干效应，我们测试这样的预测，分析到目前为止尚未探索的各个方面。特别是，占初始非平衡激发，其特征在于由过剩的能量$E_0$，包括带内和带间声子散射，我们表明，对于实际高值的$E_0$的电子扩散是非常小的，几乎独立于其能量分布，尽管一个显着的能量耗散和退相干动力学。此外，我们证明了相对于化学势的变化的效果是强大的。因此，我们的研究结果表明，金属单壁碳纳米管是一个有前途的平台，实现量子信道的非色散传输的电子波包。
Negative diffusivity of excitons in electron-hole plasmas
Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa（里斯本高等工程学院，里斯本理工学院）；GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa（等离子体与核聚变研究所，里斯本高等工学院，里斯本大学）；Physics Department, Lomonosov Moscow State University（莫斯科国立大学物理系）
