The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes

Abstract Repeated measurements in quantum mechanics can freeze (the quantum Zeno effect) or enhance (the quantum anti-Zeno effect) the time-evolution of a quantum system. In this paper, we present a general treatment of the quantum Zeno and anti-Zeno effects for arbitrary driven open quantum systems...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Mehwish Majeed, Adam Zaman Chaudhry
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2e90b5d0368649898b4aa2d111975ad7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2e90b5d0368649898b4aa2d111975ad7
record_format	dspace
spelling	oai:doaj.org-article:2e90b5d0368649898b4aa2d111975ad72021-12-02T13:51:06ZThe quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes10.1038/s41598-021-81424-z2045-2322https://doaj.org/article/2e90b5d0368649898b4aa2d111975ad72021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81424-zhttps://doaj.org/toc/2045-2322Abstract Repeated measurements in quantum mechanics can freeze (the quantum Zeno effect) or enhance (the quantum anti-Zeno effect) the time-evolution of a quantum system. In this paper, we present a general treatment of the quantum Zeno and anti-Zeno effects for arbitrary driven open quantum systems, assuming only that the system–environment coupling is weak. In particular, we obtain a general expression for the effective decay rate of a two-level system subjected to arbitrary driving fields as well as periodic measurements. We demonstrate that the driving fields change the decay rate, and hence the quantum Zeno and anti-Zeno behavior, both qualitatively and quantitatively. We also extend our results to systems consisting of more than one two-level system, as well as a two-level system strongly coupled to an environment of harmonic oscillators, to further illustrate the non-trivial effect of the driving fields on the quantum Zeno and anti-Zeno effects.Mehwish MajeedAdam Zaman ChaudhryNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mehwish Majeed Adam Zaman Chaudhry The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes
description	Abstract Repeated measurements in quantum mechanics can freeze (the quantum Zeno effect) or enhance (the quantum anti-Zeno effect) the time-evolution of a quantum system. In this paper, we present a general treatment of the quantum Zeno and anti-Zeno effects for arbitrary driven open quantum systems, assuming only that the system–environment coupling is weak. In particular, we obtain a general expression for the effective decay rate of a two-level system subjected to arbitrary driving fields as well as periodic measurements. We demonstrate that the driving fields change the decay rate, and hence the quantum Zeno and anti-Zeno behavior, both qualitatively and quantitatively. We also extend our results to systems consisting of more than one two-level system, as well as a two-level system strongly coupled to an environment of harmonic oscillators, to further illustrate the non-trivial effect of the driving fields on the quantum Zeno and anti-Zeno effects.
format	article
author	Mehwish Majeed Adam Zaman Chaudhry
author_facet	Mehwish Majeed Adam Zaman Chaudhry
author_sort	Mehwish Majeed
title	The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes
title_short	The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes
title_full	The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes
title_fullStr	The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes
title_full_unstemmed	The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes
title_sort	quantum zeno and anti-zeno effects with driving fields in the weak and strong coupling regimes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2e90b5d0368649898b4aa2d111975ad7
work_keys_str_mv	AT mehwishmajeed thequantumzenoandantizenoeffectswithdrivingfieldsintheweakandstrongcouplingregimes AT adamzamanchaudhry thequantumzenoandantizenoeffectswithdrivingfieldsintheweakandstrongcouplingregimes AT mehwishmajeed quantumzenoandantizenoeffectswithdrivingfieldsintheweakandstrongcouplingregimes AT adamzamanchaudhry quantumzenoandantizenoeffectswithdrivingfieldsintheweakandstrongcouplingregimes
_version_	1718392429300678656

The quantum Zeno and anti-Zeno effects with driving fields in the weak and strong coupling regimes

Ejemplares similares