Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses

We demonstrate that the quantum dot-confined dark exciton forms a long-lived integer spin solid-state qubit that can be deterministically on-demand initiated in a pure state by one optical pulse. Moreover, we show that this qubit can be fully controlled using short optical pulses, which are several...

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Autores principales:	I. Schwartz, E. R. Schmidgall, L. Gantz, D. Cogan, E. Bordo, Y. Don, M. Zielinski, D. Gershoni
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2015
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/5480c7b1e71e4d4982b62bfce6e86c1f
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spelling	oai:doaj.org-article:5480c7b1e71e4d4982b62bfce6e86c1f2021-12-02T11:17:38ZDeterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses10.1103/PhysRevX.5.0110092160-3308https://doaj.org/article/5480c7b1e71e4d4982b62bfce6e86c1f2015-01-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.5.011009http://doi.org/10.1103/PhysRevX.5.011009https://doaj.org/toc/2160-3308We demonstrate that the quantum dot-confined dark exciton forms a long-lived integer spin solid-state qubit that can be deterministically on-demand initiated in a pure state by one optical pulse. Moreover, we show that this qubit can be fully controlled using short optical pulses, which are several orders of magnitude shorter than the life and coherence times of the qubit. Our demonstrations do not require an externally applied magnetic field, and they establish that the quantum dot-confined dark exciton forms an excellent solid-state matter qubit with some advantages over the half-integer spin qubits, such as the confined electron and hole, separately. Since quantum dots are semiconductor nanostructures that allow integration of electronic and photonic components, the dark exciton may have important implications for implementations of quantum technologies consisting of semiconductor qubits.I. SchwartzE. R. SchmidgallL. GantzD. CoganE. BordoY. DonM. ZielinskiD. GershoniAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 5, Iss 1, p 011009 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 I. Schwartz E. R. Schmidgall L. Gantz D. Cogan E. Bordo Y. Don M. Zielinski D. Gershoni Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses
description	We demonstrate that the quantum dot-confined dark exciton forms a long-lived integer spin solid-state qubit that can be deterministically on-demand initiated in a pure state by one optical pulse. Moreover, we show that this qubit can be fully controlled using short optical pulses, which are several orders of magnitude shorter than the life and coherence times of the qubit. Our demonstrations do not require an externally applied magnetic field, and they establish that the quantum dot-confined dark exciton forms an excellent solid-state matter qubit with some advantages over the half-integer spin qubits, such as the confined electron and hole, separately. Since quantum dots are semiconductor nanostructures that allow integration of electronic and photonic components, the dark exciton may have important implications for implementations of quantum technologies consisting of semiconductor qubits.
format	article
author	I. Schwartz E. R. Schmidgall L. Gantz D. Cogan E. Bordo Y. Don M. Zielinski D. Gershoni
author_facet	I. Schwartz E. R. Schmidgall L. Gantz D. Cogan E. Bordo Y. Don M. Zielinski D. Gershoni
author_sort	I. Schwartz
title	Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses
title_short	Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses
title_full	Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses
title_fullStr	Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses
title_full_unstemmed	Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses
title_sort	deterministic writing and control of the dark exciton spin using single short optical pulses
publisher	American Physical Society
publishDate	2015
url	https://doaj.org/article/5480c7b1e71e4d4982b62bfce6e86c1f
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Deterministic Writing and Control of the Dark Exciton Spin Using Single Short Optical Pulses

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