Browsing Artículos by Author "Vértesi, Tamás"

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      Activating hidden metrological usefulness 

      Tóth, Géza; Vértesi, Tamás; Horodecki, Paweł; Horodecki, Ryszard (American Physical Society, 2020-07-07)
      [EN] We consider bipartite entangled states that cannot outperform separable states in any linear interferometer. Then, we show that these states can still be more useful metrologically than separable states if several ...
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      Bound Entangled Singlet-Like States for Quantum Metrology 

      Pal, Karoly F.; Tóth, Géza; Bene, Erika; Vértesi, Tamás (American Physical Society, 2021-05-10)
      Bipartite entangled quantum states with a positive partial transpose (PPT), i.e., PPT entangled states, are usually considered very weakly entangled. Since no pure entanglement can be distilled from them, they are also ...