Coherent electron displacement for quantum information processing using attosecond single cycle pulses

Abstract Coherent electron displacement is a conventional strategy for processing quantum information, as it enables to interconnect distinct sites in a network of atoms. The efficiency of the processing relies on the precise control of the mechanism, which has yet to be established. Here, we theore...

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Autor principal:	Hicham Agueny
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2ae1c54d8b5048c7baf6848d62ae946d
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spelling	oai:doaj.org-article:2ae1c54d8b5048c7baf6848d62ae946d2021-12-02T12:42:18ZCoherent electron displacement for quantum information processing using attosecond single cycle pulses10.1038/s41598-020-79004-82045-2322https://doaj.org/article/2ae1c54d8b5048c7baf6848d62ae946d2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79004-8https://doaj.org/toc/2045-2322Abstract Coherent electron displacement is a conventional strategy for processing quantum information, as it enables to interconnect distinct sites in a network of atoms. The efficiency of the processing relies on the precise control of the mechanism, which has yet to be established. Here, we theoretically demonstrate a new route to drive the electron displacement on a timescale faster than that of the dynamical distortion of the electron wavepacket by utilizing attosecond single-cycle pulses. The characteristic feature of these pulses relies on a vast momentum transfer to an electron, leading to its displacement following a unidirectional path. The scenario is illustrated by revealing the spatiotemporal nature of the displaced wavepacket encoding a quantum superposition state. We map out the associated phase information and retrieve it over long distances from the origin. Moreover, we show that a sequence of such pulses applied to a chain of ions enables attosecond control of the directionality of the coherent motion of the electron wavepacket back and forth between the neighbouring sites. An extension to a two-electron spin state demonstrates the versatility of the use of these pulses. Our findings establish a promising route for advanced control of quantum states using attosecond single-cycle pulses, which pave the way towards ultrafast processing of quantum information as well as imaging.Hicham AguenyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hicham Agueny Coherent electron displacement for quantum information processing using attosecond single cycle pulses
description	Abstract Coherent electron displacement is a conventional strategy for processing quantum information, as it enables to interconnect distinct sites in a network of atoms. The efficiency of the processing relies on the precise control of the mechanism, which has yet to be established. Here, we theoretically demonstrate a new route to drive the electron displacement on a timescale faster than that of the dynamical distortion of the electron wavepacket by utilizing attosecond single-cycle pulses. The characteristic feature of these pulses relies on a vast momentum transfer to an electron, leading to its displacement following a unidirectional path. The scenario is illustrated by revealing the spatiotemporal nature of the displaced wavepacket encoding a quantum superposition state. We map out the associated phase information and retrieve it over long distances from the origin. Moreover, we show that a sequence of such pulses applied to a chain of ions enables attosecond control of the directionality of the coherent motion of the electron wavepacket back and forth between the neighbouring sites. An extension to a two-electron spin state demonstrates the versatility of the use of these pulses. Our findings establish a promising route for advanced control of quantum states using attosecond single-cycle pulses, which pave the way towards ultrafast processing of quantum information as well as imaging.
format	article
author	Hicham Agueny
author_facet	Hicham Agueny
author_sort	Hicham Agueny
title	Coherent electron displacement for quantum information processing using attosecond single cycle pulses
title_short	Coherent electron displacement for quantum information processing using attosecond single cycle pulses
title_full	Coherent electron displacement for quantum information processing using attosecond single cycle pulses
title_fullStr	Coherent electron displacement for quantum information processing using attosecond single cycle pulses
title_full_unstemmed	Coherent electron displacement for quantum information processing using attosecond single cycle pulses
title_sort	coherent electron displacement for quantum information processing using attosecond single cycle pulses
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/2ae1c54d8b5048c7baf6848d62ae946d
work_keys_str_mv	AT hichamagueny coherentelectrondisplacementforquantuminformationprocessingusingattosecondsinglecyclepulses
_version_	1718393673935224832

Coherent electron displacement for quantum information processing using attosecond single cycle pulses

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