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5 papers · 2 filters
Reexamination of strong subadditivity: A quantum-correlation approach
Razieh Taghiabadi, Seyed Javad Akhtarshenas, Mohsen Sarbishaei
The strong subadditivity inequality of von Neumann entropy relates the entropy of subsystems of a tripartite state to that of the composite system. Here, we define $\bold…
Comparison of quantum discord and fully entangled fraction of two classes of states
Javad Behdani, Seyed Javad Akhtarshenas, Mohsen Sarbishaei
The quantumness of a generic state is the resource of many applications in quantum information theory and it is interesting to survey the measures which are able to detect its trac…
Two-qubit universal and state-dependent quantum cloning machine and quantum correlation broadcasting
Azam Kheirollahi, Hamidreza Mohammadi, Seyed Javad Akhtarshenasc
Due to the axioms of quantum mechanics, perfect cloning of an unknown quantum state is impossible. But since imperfect cloning is still possible, a question arises: "Is there an op…
Revealing quantum correlation by negativity of the Wigner function
Razieh Taghiabadi, Seyed Javad Akhtarshenas, Mohsen Sarbishaei
We analyze two two-mode continuous variable separable states with the same marginal states. We adopt the definition of classicality in the form of well-defined positive Wigner func…
Quantifying Nonclassicality of Correlations based on the Concept of Nondisruptive Local State Identification
Azam Kheirollahi, Seyed Javad Akhtarshenas, Hamidreza Mohammadi
A bipartite state is classical with respect to party if and only if party can perform nondisruptive local state identification (NDLID) by a projective measurement. Motivate…