Quantum Fisher information of an open and noisy system in the steady state

dc.authoridAltintas, Azmi Ali/0000-0003-2383-4705
dc.authorscopusid14029658800
dc.authorwosidAltintas, Azmi Ali/F-1595-2014
dc.contributor.authorAltintas, Azmi Ali
dc.date.accessioned2024-05-25T11:16:49Z
dc.date.available2024-05-25T11:16:49Z
dc.date.issued2016
dc.departmentOkan Universityen_US
dc.department-temp[Altintas, Azmi Ali] Okan Univ, Fac Engn & Architecture, Istanbul, Turkeyen_US
dc.descriptionAltintas, Azmi Ali/0000-0003-2383-4705en_US
dc.description.abstractWe study the quantum Fisher information (QFI) per particle of an open (particles can enter and leave the system) and dissipative (far from thermodynamical equilibrium) steady state system of two qubits in a noise which is decoherence. We show the behavior of QFI per particle of the system due to changes of reset and decoherence parameters r and gamma respectively. The parameter r is the strength of the reset mechanism, gamma is the strength of decoherence and in our case it is dephasing channel. The parameters gamma and r are real numbers. We observe that the reset parameter must be bigger than decoherence parameter. We have found that by choosing coupling parameter g as 5 gamma the QFI per particle is 1.00226 which is greater than shot noise limit at gamma = 0.5 and r = 14. Also the concurrence and negativity of the such state have been calculated and they are found as 0.0992486 and 0.0496243 respectively. We have shown that when the concurrence and negativity of some specific states different than zero, which means the state is entangled, the QFI of the system is greater than I. The QFI per particle, concurrence and negativity shows that the chosen case is weakly entangled. We discovered that the optimal direction depends on the parameters r and gamma and a change in the direction affects the behavior of the QFI of the system. (C) 2016 Elsevier Inc. All rights reserved.en_US
dc.description.sponsorshipIsik University Scientific Research Fund [BAP-14A101]en_US
dc.description.sponsorshipThis work was funded by Isik University Scientific Research Fund, Grant Number: BAP-14A101.en_US
dc.identifier.citationcount17
dc.identifier.doi10.1016/j.aop.2016.01.016
dc.identifier.endpage198en_US
dc.identifier.issn0003-4916
dc.identifier.issn1096-035X
dc.identifier.scopus2-s2.0-84957876314
dc.identifier.scopusqualityQ2
dc.identifier.startpage192en_US
dc.identifier.urihttps://doi.org/10.1016/j.aop.2016.01.016
dc.identifier.urihttps://hdl.handle.net/20.500.14517/175
dc.identifier.volume367en_US
dc.identifier.wosWOS:000373663000008
dc.identifier.wosqualityQ2
dc.language.isoen
dc.publisherAcademic Press inc Elsevier Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.scopus.citedbyCount17
dc.subjectQuantum Fisher informationen_US
dc.subjectReset mechanismen_US
dc.subjectDissipative systemen_US
dc.titleQuantum Fisher information of an open and noisy system in the steady stateen_US
dc.typeArticleen_US
dc.wos.citedbyCount19
dspace.entity.typePublication

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