Revival of rabi oscillations in optically excited semiconductor quantum dots

We present the theoretical investigation of the dynamics of strongly confined laser driven semiconductor quantum dots coupled to phonons. We provide a formally exact solution of this non-Markovian quantum decoherence problem. The method is based on the discrete time-dependent path-integral Monte...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Croitor, Mihail
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2008
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/f64e62e271eb4057adbcae2fa3e82d32
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f64e62e271eb4057adbcae2fa3e82d32
record_format	dspace
spelling	oai:doaj.org-article:f64e62e271eb4057adbcae2fa3e82d322021-11-21T12:06:41ZRevival of rabi oscillations in optically excited semiconductor quantum dots2537-63651810-648Xhttps://doaj.org/article/f64e62e271eb4057adbcae2fa3e82d322008-07-01T00:00:00Zhttps://mjps.nanotech.md/archive/2008/article/3914https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365We present the theoretical investigation of the dynamics of strongly confined laser driven semiconductor quantum dots coupled to phonons. We provide a formally exact solution of this non-Markovian quantum decoherence problem. The method is based on the discrete time-dependent path-integral Monte Carlo technique. This method allows us to explore the cases of long pulses, arbitrary dot-phonon and dot-laser coupling and high temperatures, which up to now have been inaccessible. We find that although Rabi oscillations of the density matrix are suppressed due to phonon induced dephasing, the dephasing rate is a non-monotonic function of the laser field and that it becomes smaller at larger fields leading to a remarkable revival of the Rabi oscillations. This revival is of a general nature which for the type of systems studied here occurs for all temperatures and carrier-phonon coupling strengths.Croitor, MihailD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 7, Iss 3, Pp 334-342 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Croitor, Mihail Revival of rabi oscillations in optically excited semiconductor quantum dots
description	We present the theoretical investigation of the dynamics of strongly confined laser driven semiconductor quantum dots coupled to phonons. We provide a formally exact solution of this non-Markovian quantum decoherence problem. The method is based on the discrete time-dependent path-integral Monte Carlo technique. This method allows us to explore the cases of long pulses, arbitrary dot-phonon and dot-laser coupling and high temperatures, which up to now have been inaccessible. We find that although Rabi oscillations of the density matrix are suppressed due to phonon induced dephasing, the dephasing rate is a non-monotonic function of the laser field and that it becomes smaller at larger fields leading to a remarkable revival of the Rabi oscillations. This revival is of a general nature which for the type of systems studied here occurs for all temperatures and carrier-phonon coupling strengths.
format	article
author	Croitor, Mihail
author_facet	Croitor, Mihail
author_sort	Croitor, Mihail
title	Revival of rabi oscillations in optically excited semiconductor quantum dots
title_short	Revival of rabi oscillations in optically excited semiconductor quantum dots
title_full	Revival of rabi oscillations in optically excited semiconductor quantum dots
title_fullStr	Revival of rabi oscillations in optically excited semiconductor quantum dots
title_full_unstemmed	Revival of rabi oscillations in optically excited semiconductor quantum dots
title_sort	revival of rabi oscillations in optically excited semiconductor quantum dots
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2008
url	https://doaj.org/article/f64e62e271eb4057adbcae2fa3e82d32
work_keys_str_mv	AT croitormihail revivalofrabioscillationsinopticallyexcitedsemiconductorquantumdots
_version_	1718419281724571648

Revival of rabi oscillations in optically excited semiconductor quantum dots

Ejemplares similares