Robust quantum sensing with strongly interacting probe systems

Quantum metrology: better sensing through interactions Using collections of quantum probes that continuously interact with each other could enable more precise frequency measurements. Without considering losses, the performance of quantum measurement devices can be improved by measuring for longer....

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Autores principales:	Shane Dooley, Michael Hanks, Shojun Nakayama, William J. Munro, Kae Nemoto
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/4002203a272b487984edca153bccc967
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spelling	oai:doaj.org-article:4002203a272b487984edca153bccc9672021-12-02T12:33:55ZRobust quantum sensing with strongly interacting probe systems10.1038/s41534-018-0073-32056-6387https://doaj.org/article/4002203a272b487984edca153bccc9672018-05-01T00:00:00Zhttps://doi.org/10.1038/s41534-018-0073-3https://doaj.org/toc/2056-6387Quantum metrology: better sensing through interactions Using collections of quantum probes that continuously interact with each other could enable more precise frequency measurements. Without considering losses, the performance of quantum measurement devices can be improved by measuring for longer. In practice, this is not possible because coupling to the thermal environment introduces decoherence that limits the measurement time. Shane Dooley and colleagues from the National Institute of Informatics, Japan, have investigated theoretically how introducing strong mutual interactions to an ensemble of quantum systems can improve their collective sensitivity. The strong coupling changes how the environment affects the quantum coherence, allowing the sensing time to be extended by a factor that increases exponentially with the interaction strength and number of sensors. A simple, experimentally-realistic device with only two superconducting qubits could gain a 50% sensitivity increase using their new approach.Shane DooleyMichael HanksShojun NakayamaWilliam J. MunroKae NemotoNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 4, Iss 1, Pp 1-7 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 Shane Dooley Michael Hanks Shojun Nakayama William J. Munro Kae Nemoto Robust quantum sensing with strongly interacting probe systems
description	Quantum metrology: better sensing through interactions Using collections of quantum probes that continuously interact with each other could enable more precise frequency measurements. Without considering losses, the performance of quantum measurement devices can be improved by measuring for longer. In practice, this is not possible because coupling to the thermal environment introduces decoherence that limits the measurement time. Shane Dooley and colleagues from the National Institute of Informatics, Japan, have investigated theoretically how introducing strong mutual interactions to an ensemble of quantum systems can improve their collective sensitivity. The strong coupling changes how the environment affects the quantum coherence, allowing the sensing time to be extended by a factor that increases exponentially with the interaction strength and number of sensors. A simple, experimentally-realistic device with only two superconducting qubits could gain a 50% sensitivity increase using their new approach.
format	article
author	Shane Dooley Michael Hanks Shojun Nakayama William J. Munro Kae Nemoto
author_facet	Shane Dooley Michael Hanks Shojun Nakayama William J. Munro Kae Nemoto
author_sort	Shane Dooley
title	Robust quantum sensing with strongly interacting probe systems
title_short	Robust quantum sensing with strongly interacting probe systems
title_full	Robust quantum sensing with strongly interacting probe systems
title_fullStr	Robust quantum sensing with strongly interacting probe systems
title_full_unstemmed	Robust quantum sensing with strongly interacting probe systems
title_sort	robust quantum sensing with strongly interacting probe systems
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/4002203a272b487984edca153bccc967
work_keys_str_mv	AT shanedooley robustquantumsensingwithstronglyinteractingprobesystems AT michaelhanks robustquantumsensingwithstronglyinteractingprobesystems AT shojunnakayama robustquantumsensingwithstronglyinteractingprobesystems AT williamjmunro robustquantumsensingwithstronglyinteractingprobesystems AT kaenemoto robustquantumsensingwithstronglyinteractingprobesystems
_version_	1718393854519934976

Robust quantum sensing with strongly interacting probe systems

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