Transport of Neutral Optical Excitations Using Electric Fields

Mobile quantum impurities interacting with a fermionic bath form quasiparticles known as Fermi polarons. We demonstrate that a force applied to the bath particles can generate a drag force of similar magnitude acting on the impurities, realizing a novel, nonperturbative Coulomb drag effect. To prove...

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Autores principales:	Ovidiu Cotleţ, Falko Pientka, Richard Schmidt, Gergely Zarand, Eugene Demler, Atac Imamoglu
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2019
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/9cfb026cd22b4b12a331695bf96c7699
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spelling	oai:doaj.org-article:9cfb026cd22b4b12a331695bf96c76992021-12-02T11:30:33ZTransport of Neutral Optical Excitations Using Electric Fields10.1103/PhysRevX.9.0410192160-3308https://doaj.org/article/9cfb026cd22b4b12a331695bf96c76992019-10-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.9.041019http://doi.org/10.1103/PhysRevX.9.041019https://doaj.org/toc/2160-3308Mobile quantum impurities interacting with a fermionic bath form quasiparticles known as Fermi polarons. We demonstrate that a force applied to the bath particles can generate a drag force of similar magnitude acting on the impurities, realizing a novel, nonperturbative Coulomb drag effect. To prove this, we calculate the fully self-consistent, frequency-dependent transconductivity at zero temperature in the Baym-Kadanoff conserving approximation. We apply our theory to excitons and exciton polaritons interacting with a bath of charge carriers in a doped semiconductor embedded in a microcavity. In external electric and magnetic fields, the drag effect enables electrical control of excitons and may pave the way for the implementation of gauge fields for excitons and polaritons. Moreover, a reciprocal effect may facilitate optical manipulation of electron transport. Our findings establish transport measurements as a novel, powerful tool for probing the many-body physics of mobile quantum impurities.Ovidiu CotleţFalko PientkaRichard SchmidtGergely ZarandEugene DemlerAtac ImamogluAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 9, Iss 4, p 041019 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Ovidiu Cotleţ Falko Pientka Richard Schmidt Gergely Zarand Eugene Demler Atac Imamoglu Transport of Neutral Optical Excitations Using Electric Fields
description	Mobile quantum impurities interacting with a fermionic bath form quasiparticles known as Fermi polarons. We demonstrate that a force applied to the bath particles can generate a drag force of similar magnitude acting on the impurities, realizing a novel, nonperturbative Coulomb drag effect. To prove this, we calculate the fully self-consistent, frequency-dependent transconductivity at zero temperature in the Baym-Kadanoff conserving approximation. We apply our theory to excitons and exciton polaritons interacting with a bath of charge carriers in a doped semiconductor embedded in a microcavity. In external electric and magnetic fields, the drag effect enables electrical control of excitons and may pave the way for the implementation of gauge fields for excitons and polaritons. Moreover, a reciprocal effect may facilitate optical manipulation of electron transport. Our findings establish transport measurements as a novel, powerful tool for probing the many-body physics of mobile quantum impurities.
format	article
author	Ovidiu Cotleţ Falko Pientka Richard Schmidt Gergely Zarand Eugene Demler Atac Imamoglu
author_facet	Ovidiu Cotleţ Falko Pientka Richard Schmidt Gergely Zarand Eugene Demler Atac Imamoglu
author_sort	Ovidiu Cotleţ
title	Transport of Neutral Optical Excitations Using Electric Fields
title_short	Transport of Neutral Optical Excitations Using Electric Fields
title_full	Transport of Neutral Optical Excitations Using Electric Fields
title_fullStr	Transport of Neutral Optical Excitations Using Electric Fields
title_full_unstemmed	Transport of Neutral Optical Excitations Using Electric Fields
title_sort	transport of neutral optical excitations using electric fields
publisher	American Physical Society
publishDate	2019
url	https://doaj.org/article/9cfb026cd22b4b12a331695bf96c7699
work_keys_str_mv	AT ovidiucotlet transportofneutralopticalexcitationsusingelectricfields AT falkopientka transportofneutralopticalexcitationsusingelectricfields AT richardschmidt transportofneutralopticalexcitationsusingelectricfields AT gergelyzarand transportofneutralopticalexcitationsusingelectricfields AT eugenedemler transportofneutralopticalexcitationsusingelectricfields AT atacimamoglu transportofneutralopticalexcitationsusingelectricfields
_version_	1718395894908321792

Transport of Neutral Optical Excitations Using Electric Fields

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