Improved quantum magnetometry beyond the standard quantum limit
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/30408 |
Resumo: | Under ideal conditions, quantum metrology promises a precision gain over classical techniques scaling quadratically with the number of probe particles. At the same time, no-go results have shown that generic, uncorrelated noise limits the quantum advantage to a constant factor. In frequency estimation scenarios, however, there are exceptions to this rule and, in particular, it has been found that transversal dephasing does allow for a scaling quantum advantage. Yet, it has remained unclear whether such exemptions can be exploited in practical scenarios. Here, we argue that the transversal-noise model applies to the setting of recent magnetometry experiments and show that a scaling advantage can be maintained with one-axistwisted spin-squeezed states and Ramsey-interferometry-like measurements. This is achieved by exploiting the geometry of the setup that, as we demonstrate, has a strong influence on the achievable quantum enhancement for experimentally feasible parameter settings. When, in addition to the dominant transversal noise, other sources of decoherence are present, the quantum advantage is asymptotically bounded by a constant, but this constant may be significantly improved by exploring the geometry |
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Brask, J. B.Araújo, Rafael Chaves SoutoKołodyński, J.2020-10-14T13:27:20Z2020-10-14T13:27:20Z2015-07-22BRASK, J. B.; CHAVES, R.; KOłODYńSKI, J.. Improved quantum magnetometry beyond the standard quantum limit. Physical Review X, [S.L.], v. 5, n. 3, p. 031010, 22 jul. 2015. Disponível em: https://journals.aps.org/prx/abstract/10.1103/PhysRevX.5.031010. Acesso em: 04 out. 2020. http://dx.doi.org/10.1103/physrevx.5.031010.2160-3308https://repositorio.ufrn.br/handle/123456789/3040810.1103/PhysRevX.5.031010American Physical SocietyAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessAtomic and Molecular PhysicsAtomic and Molecular PhysicsQuantum InformationImproved quantum magnetometry beyond the standard quantum limitinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleUnder ideal conditions, quantum metrology promises a precision gain over classical techniques scaling quadratically with the number of probe particles. At the same time, no-go results have shown that generic, uncorrelated noise limits the quantum advantage to a constant factor. In frequency estimation scenarios, however, there are exceptions to this rule and, in particular, it has been found that transversal dephasing does allow for a scaling quantum advantage. Yet, it has remained unclear whether such exemptions can be exploited in practical scenarios. Here, we argue that the transversal-noise model applies to the setting of recent magnetometry experiments and show that a scaling advantage can be maintained with one-axistwisted spin-squeezed states and Ramsey-interferometry-like measurements. This is achieved by exploiting the geometry of the setup that, as we demonstrate, has a strong influence on the achievable quantum enhancement for experimentally feasible parameter settings. When, in addition to the dominant transversal noise, other sources of decoherence are present, the quantum advantage is asymptotically bounded by a constant, but this constant may be significantly improved by exploring the geometryengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALImprovedQuantum_ARAUJO_2015.pdfImprovedQuantum_ARAUJO_2015.pdfArtigoapplication/pdf673172https://repositorio.ufrn.br/bitstream/123456789/30408/1/ImprovedQuantum_ARAUJO_2015.pdf850f4817f3fd20e971fa7fb896189a3cMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/30408/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/30408/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTImprovedQuantum_ARAUJO_2015.pdf.txtImprovedQuantum_ARAUJO_2015.pdf.txtExtracted texttext/plain63341https://repositorio.ufrn.br/bitstream/123456789/30408/4/ImprovedQuantum_ARAUJO_2015.pdf.txt7e957f977160a927741b366ac722e1a2MD54THUMBNAILImprovedQuantum_ARAUJO_2015.pdf.jpgImprovedQuantum_ARAUJO_2015.pdf.jpgGenerated Thumbnailimage/jpeg1679https://repositorio.ufrn.br/bitstream/123456789/30408/5/ImprovedQuantum_ARAUJO_2015.pdf.jpg5fdc2a49db3f27fd92acc7553ef77fceMD55123456789/304082020-10-18 04:53:57.236oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-10-18T07:53:57Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Improved quantum magnetometry beyond the standard quantum limit |
title |
Improved quantum magnetometry beyond the standard quantum limit |
spellingShingle |
Improved quantum magnetometry beyond the standard quantum limit Brask, J. B. Atomic and Molecular Physics Atomic and Molecular Physics Quantum Information |
title_short |
Improved quantum magnetometry beyond the standard quantum limit |
title_full |
Improved quantum magnetometry beyond the standard quantum limit |
title_fullStr |
Improved quantum magnetometry beyond the standard quantum limit |
title_full_unstemmed |
Improved quantum magnetometry beyond the standard quantum limit |
title_sort |
Improved quantum magnetometry beyond the standard quantum limit |
author |
Brask, J. B. |
author_facet |
Brask, J. B. Araújo, Rafael Chaves Souto Kołodyński, J. |
author_role |
author |
author2 |
Araújo, Rafael Chaves Souto Kołodyński, J. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Brask, J. B. Araújo, Rafael Chaves Souto Kołodyński, J. |
dc.subject.por.fl_str_mv |
Atomic and Molecular Physics Atomic and Molecular Physics Quantum Information |
topic |
Atomic and Molecular Physics Atomic and Molecular Physics Quantum Information |
description |
Under ideal conditions, quantum metrology promises a precision gain over classical techniques scaling quadratically with the number of probe particles. At the same time, no-go results have shown that generic, uncorrelated noise limits the quantum advantage to a constant factor. In frequency estimation scenarios, however, there are exceptions to this rule and, in particular, it has been found that transversal dephasing does allow for a scaling quantum advantage. Yet, it has remained unclear whether such exemptions can be exploited in practical scenarios. Here, we argue that the transversal-noise model applies to the setting of recent magnetometry experiments and show that a scaling advantage can be maintained with one-axistwisted spin-squeezed states and Ramsey-interferometry-like measurements. This is achieved by exploiting the geometry of the setup that, as we demonstrate, has a strong influence on the achievable quantum enhancement for experimentally feasible parameter settings. When, in addition to the dominant transversal noise, other sources of decoherence are present, the quantum advantage is asymptotically bounded by a constant, but this constant may be significantly improved by exploring the geometry |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015-07-22 |
dc.date.accessioned.fl_str_mv |
2020-10-14T13:27:20Z |
dc.date.available.fl_str_mv |
2020-10-14T13:27:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
BRASK, J. B.; CHAVES, R.; KOłODYńSKI, J.. Improved quantum magnetometry beyond the standard quantum limit. Physical Review X, [S.L.], v. 5, n. 3, p. 031010, 22 jul. 2015. Disponível em: https://journals.aps.org/prx/abstract/10.1103/PhysRevX.5.031010. Acesso em: 04 out. 2020. http://dx.doi.org/10.1103/physrevx.5.031010. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/30408 |
dc.identifier.issn.none.fl_str_mv |
2160-3308 |
dc.identifier.doi.none.fl_str_mv |
10.1103/PhysRevX.5.031010 |
identifier_str_mv |
BRASK, J. B.; CHAVES, R.; KOłODYńSKI, J.. Improved quantum magnetometry beyond the standard quantum limit. Physical Review X, [S.L.], v. 5, n. 3, p. 031010, 22 jul. 2015. Disponível em: https://journals.aps.org/prx/abstract/10.1103/PhysRevX.5.031010. Acesso em: 04 out. 2020. http://dx.doi.org/10.1103/physrevx.5.031010. 2160-3308 10.1103/PhysRevX.5.031010 |
url |
https://repositorio.ufrn.br/handle/123456789/30408 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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