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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7432
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dc.contributor.authorShukla, Manish Kumar-
dc.contributor.authorChakrabarty, Indranil-
dc.contributor.authorChatterjee, Sourav-
dc.date.accessioned2020-03-02T05:58:43Z-
dc.date.available2020-03-02T05:58:43Z-
dc.date.issued2020-01-
dc.identifier.citationQuantum Information Processing,2020, Vol.19, p18en_US
dc.identifier.issn1570-0755 1-
dc.identifier.issn573-1332 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7432-
dc.descriptionRestricted Access.en_US
dc.description.abstractIn this work, we extensively study the problem of broadcasting of entanglement as state-dependent versus state-independent cloners. We start by re-conceptualizing the idea of state-dependent quantum cloning machine (SD-QCM), and in that process, we introduce different types of SD-QCMs, namely orthogonal and non-orthogonal cloners. We derive the conditions for which the fidelity of these cloners will become independent of the input state. We note that such a construction allows us to maximize the cloning fidelity at the cost of having partial information of the input state. In the discussion on broadcasting of entanglement, we start with a general two-qubit state as our resource and later we consider a specific example of Bell diagonal state. We apply both state-dependent and state-independent cloners (orthogonal and non-orthogonal), locally and non-locally, on input resource state and obtain a range for broadcasting of entanglement in terms of the input state parameters. Our results highlight several instances where the state-dependent cloners outperform their state-independent counterparts in broadcasting entanglement. Our study provides a comparative perspective on the broadcasting of entanglement via cloning in two-qubit scenario, when we have some knowledge of the resource ensemble versus a situation when we have no such information.en_US
dc.language.isoenen_US
dc.publisherSpringer Verlagen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2020QuIP...19...15S/abstracten_US
dc.relation.urihttps://arxiv.org/abs/1904.12899en_US
dc.relation.urihttps://doi.org/10.1007/s11128-019-2500-6en_US
dc.rights2020 Springer-Verlagen_US
dc.subjectCloningen_US
dc.subjectBroadcastingen_US
dc.subjectEntanglementen_US
dc.subjectQuantum Physicsen_US
dc.titleBroadcasting of entanglement via orthogonal and non-orthogonal state-dependent clonersen_US
dc.typeArticleen_US
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