Quantum metrology: Surpassing the shot-noise limit with Dzyaloshinskii-Moriya interaction

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dc.authorid0000-0002-5872-9158
dc.authorid0000-0003-2383-4705
dc.contributor.authorÖzaydın, Fatihen_US
dc.contributor.authorAltıntaş, Azmi Alien_US
dc.date.accessioned2016-02-18T14:07:06Z
dc.date.available2016-02-18T14:07:06Z
dc.date.issued2015-11-09
dc.departmentIşık Üniversitesi, Fen Edebiyat Fakültesi, Enformasyon Teknolojileri Bölümüen_US
dc.departmentIşık University, Faculty of Arts and Sciences, Department of Information Technologiesen_US
dc.description.abstractEntanglement is at the heart of quantum technologies such as quantum information and quantum metrology. Providing larger quantum Fisher information (QFI), entangled systems can be better resources than separable systems in quantum metrology. However the effects on the entanglement dynamics such as decoherence usually decrease the QFI considerably. On the other hand, Dzyaloshinskii-Moriya (DM) interaction has been shown to excite entanglement. Since an increase in entanglement does not imply an increase in QFI, and also there are cases where QFI decreases as entanglement increases, it is interesting to study the influence of DM interaction on quantum metrology. In this work, we study the QFI of thermal entanglement of two-qubit and three-qubit Heisenberg models with respect to SU(2) rotations. We show that even at high temperatures, DM interaction excites QFI of both ferromagnetic and antiferromagnetic models. We also show that QFI of the ferromagnetic model of two qubits can surpass the shot-noise limit of the separable states, while QFI of the antiferromagnetic model in consideration can only approach to the shot-noise limit. Our results open new insights in quantum metrology with Heisenberg models.en_US
dc.description.sponsorshipThis work was funded by Isik University Scientific Research Fund, Grant Number: BAP-14A101. FO thanks S. Tekinay, for her continuous supporten_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationÖzaydın, F. & Altıntaş, A. A. (2015). Quantum metrology: Surpassing the shot-noise limit with dzyaloshinskii-moriya interaction. Scientific Reports, 5, 1-6. doi:10.1038/srep16360en_US
dc.identifier.doi10.1038/srep16360
dc.identifier.endpage6
dc.identifier.issn2045-2322
dc.identifier.pmid26549409
dc.identifier.scopus2-s2.0-84946914373
dc.identifier.scopusqualityQ1
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/11729/756
dc.identifier.urihttp://dx.doi.org/10.1038/srep16360
dc.identifier.volume5
dc.identifier.wosWOS:000364305100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorÖzaydın, Fatihen_US
dc.institutionauthorid0000-0002-5872-9158
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherNature Publishing Groupen_US
dc.relation.ispartofScientific Reportsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectFisher informationen_US
dc.subjectW statesen_US
dc.subjectEntanglementen_US
dc.subjectSystemsen_US
dc.titleQuantum metrology: Surpassing the shot-noise limit with Dzyaloshinskii-Moriya interactionen_US
dc.typeArticleen_US
dspace.entity.typePublication

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