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Article: Quantum stopwatch: how to store time in a quantum memory

TitleQuantum stopwatch: how to store time in a quantum memory
Authors
KeywordsData compression
Quantum clocks
Quantum metrology
Issue Date2018
PublisherThe Royal Society Publishing. The Journal's web site is located at http://rspa.royalsocietypublishing.org/
Citation
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018, v. 474 n. 2213, article no. 20170773 How to Cite?
AbstractQuantum mechanics imposes a fundamental trade-off between the accuracy of time measurements and the size of the systems used as clocks. When the measurements of different time intervals are combined, the errors due to the finite clock size accumulate, resulting in an overall inaccuracy that grows with the complexity of the set-up. Here, we introduce a method that, in principle, eludes the accumulation of errors by coherently transferring information from a quantum clock to a quantum memory of the smallest possible size. Our method could be used to measure the total duration of a sequence of events with enhanced accuracy, and to reduce the amount of quantum communication needed to stabilize clocks in a quantum network.
Persistent Identifierhttp://hdl.handle.net/10722/258246
ISSN
2023 Impact Factor: 2.9
2023 SCImago Journal Rankings: 0.845
PubMed Central ID
ISI Accession Number ID
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Errata

 

DC FieldValueLanguage
dc.contributor.authorYang, Y-
dc.contributor.authorChiribella, G-
dc.contributor.authorHayashi, M-
dc.date.accessioned2018-08-22T01:35:18Z-
dc.date.available2018-08-22T01:35:18Z-
dc.date.issued2018-
dc.identifier.citationProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018, v. 474 n. 2213, article no. 20170773-
dc.identifier.issn1364-5021-
dc.identifier.urihttp://hdl.handle.net/10722/258246-
dc.description.abstractQuantum mechanics imposes a fundamental trade-off between the accuracy of time measurements and the size of the systems used as clocks. When the measurements of different time intervals are combined, the errors due to the finite clock size accumulate, resulting in an overall inaccuracy that grows with the complexity of the set-up. Here, we introduce a method that, in principle, eludes the accumulation of errors by coherently transferring information from a quantum clock to a quantum memory of the smallest possible size. Our method could be used to measure the total duration of a sequence of events with enhanced accuracy, and to reduce the amount of quantum communication needed to stabilize clocks in a quantum network.-
dc.languageeng-
dc.publisherThe Royal Society Publishing. The Journal's web site is located at http://rspa.royalsocietypublishing.org/-
dc.relation.ispartofProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences-
dc.subjectData compression-
dc.subjectQuantum clocks-
dc.subjectQuantum metrology-
dc.titleQuantum stopwatch: how to store time in a quantum memory-
dc.typeArticle-
dc.identifier.emailChiribella, G: giulio@hku.hk-
dc.identifier.authorityChiribella, G=rp02035-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1098/rspa.2017.0773-
dc.identifier.pmid29887749-
dc.identifier.pmcidPMC5990687-
dc.identifier.scopuseid_2-s2.0-85047527876-
dc.identifier.hkuros287177-
dc.identifier.volume474-
dc.identifier.issue2213-
dc.identifier.spagearticle no. 20170773-
dc.identifier.epagearticle no. 20170773-
dc.identifier.isiWOS:000433498800010-
dc.publisher.placeUnited Kingdom-
dc.relation.erratumdoi:10.1098/rspa.2019.0052-
dc.relation.erratumeid:eid_2-s2.0-85064262981-
dc.relation.projectCompressed Quantum Dynamics: Storing, Programming, and Simulating Physical Processes with Minimum-Sized Quantum Systems-
dc.identifier.issnl1364-5021-

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