Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots

Abstract Quantum tunneling dominates coherent transport at low temperatures in many systems of great interest. In this work we report a many–body tunneling (MBT), by nonperturbatively solving the Anderson multi-impurity model, and identify it a fundamental tunneling process on top of the well–acknow...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	WenJie Hou, YuanDong Wang, JianHua Wei, ZhenGang Zhu, YiJing Yan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2da51fd85cfc4ba593ba8846a53a3e8e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2da51fd85cfc4ba593ba8846a53a3e8e
record_format	dspace
spelling	oai:doaj.org-article:2da51fd85cfc4ba593ba8846a53a3e8e2021-12-02T12:32:39ZMany-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots10.1038/s41598-017-02728-72045-2322https://doaj.org/article/2da51fd85cfc4ba593ba8846a53a3e8e2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02728-7https://doaj.org/toc/2045-2322Abstract Quantum tunneling dominates coherent transport at low temperatures in many systems of great interest. In this work we report a many–body tunneling (MBT), by nonperturbatively solving the Anderson multi-impurity model, and identify it a fundamental tunneling process on top of the well–acknowledged sequential tunneling and cotunneling. We show that the MBT involves the dynamics of doublons in strongly correlated systems. Proportional to the numbers of dynamical doublons, the MBT can dominate the off–resonant transport in the strongly correlated regime. A T 3/2–dependence of the MBT current on temperature is uncovered and can be identified as a fingerprint of the MBT in experiments. We also prove that the MBT can support the coherent long–range tunneling of doublons, which is well consistent with recent experiments on ultracold atoms. As a fundamental physical process, the MBT is expected to play important roles in general quantum systems.WenJie HouYuanDong WangJianHua WeiZhenGang ZhuYiJing YanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q WenJie Hou YuanDong Wang JianHua Wei ZhenGang Zhu YiJing Yan Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots
description	Abstract Quantum tunneling dominates coherent transport at low temperatures in many systems of great interest. In this work we report a many–body tunneling (MBT), by nonperturbatively solving the Anderson multi-impurity model, and identify it a fundamental tunneling process on top of the well–acknowledged sequential tunneling and cotunneling. We show that the MBT involves the dynamics of doublons in strongly correlated systems. Proportional to the numbers of dynamical doublons, the MBT can dominate the off–resonant transport in the strongly correlated regime. A T 3/2–dependence of the MBT current on temperature is uncovered and can be identified as a fingerprint of the MBT in experiments. We also prove that the MBT can support the coherent long–range tunneling of doublons, which is well consistent with recent experiments on ultracold atoms. As a fundamental physical process, the MBT is expected to play important roles in general quantum systems.
format	article
author	WenJie Hou YuanDong Wang JianHua Wei ZhenGang Zhu YiJing Yan
author_facet	WenJie Hou YuanDong Wang JianHua Wei ZhenGang Zhu YiJing Yan
author_sort	WenJie Hou
title	Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots
title_short	Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots
title_full	Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots
title_fullStr	Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots
title_full_unstemmed	Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots
title_sort	many-body tunneling and nonequilibrium dynamics of doublons in strongly correlated quantum dots
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2da51fd85cfc4ba593ba8846a53a3e8e
work_keys_str_mv	AT wenjiehou manybodytunnelingandnonequilibriumdynamicsofdoublonsinstronglycorrelatedquantumdots AT yuandongwang manybodytunnelingandnonequilibriumdynamicsofdoublonsinstronglycorrelatedquantumdots AT jianhuawei manybodytunnelingandnonequilibriumdynamicsofdoublonsinstronglycorrelatedquantumdots AT zhengangzhu manybodytunnelingandnonequilibriumdynamicsofdoublonsinstronglycorrelatedquantumdots AT yijingyan manybodytunnelingandnonequilibriumdynamicsofdoublonsinstronglycorrelatedquantumdots
_version_	1718393968870293504

Many-body Tunneling and Nonequilibrium Dynamics of Doublons in Strongly Correlated Quantum Dots

Ejemplares similares