Title:	Broadcasting of quantum correlations in qubit-qudit systems
Authors:	Rounak, Mundra Chatterjee, Sourav Patel, Dhrumil +2 Co-Authors
Issue Date:	18-Oct-2019
Publisher:	American Physical Society
Citation:	Physical Review A, 2019 ,Vol.100, p042319
Abstract:	Quantum mechanical properties like entanglement, discord and coherence act as fundamental resources in various quantum information processing tasks. Consequently, generating more resources from a few, typically termed as broadcasting is a task of utmost significance. One such strategy of broadcasting is through the application of cloning machines. In this article, broadcasting of quantum resources beyond 2⊗2 systems is investigated. In particular, in 2⊗3 dimension, a class of states not useful for broadcasting of entanglement is characterized for a choice of optimal universal Heisenberg cloning machine. The broadcasting ranges for maximally entangled mixed states (MEMS) and two parameter class of states (TPCS) are obtained to exemplify our protocol. A significant derivative of the protocol is the generation of entangled states with positive partial transpose in 3⊗3 dimension and states which are absolutely separable in 2⊗2 dimension. Moving beyond entanglement, in 2⊗d dimension, the impossibility to optimally broadcast quantum correlations beyond entanglement (QCsbE) (discord) and quantum coherence ( l1 -norm) is established. However, some significant illustrations are provided to highlight that non-optimal broadcasting of QCsbE and coherence are still possible.
Description:	Open Access
URI:	http://hdl.handle.net/2289/7353
ISSN:	2469-9926 2469-9934 (online)
Alternative Location:	https://arxiv.org/abs/1807.11002 https://ui.adsabs.harvard.edu/abs/2018arXiv180711002M/abstract https://doi.org/10.1103/PhysRevA.100.042319
Copyright:	2019 American Physical Society
Appears in Collections:	Research Papers (LAMP)

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