Now showing items 1-4 of 4

    • Inequivalence of entanglement, steering, and Bell nonlocality for general measurements 

      Quintino, Marco Tulio; Vértesi, Tamas; Cavalcanti, Daniel; Augusiak, Remigiusz; Demianowicz, Maciej; Acín, Antonio; Brunner, Nicolas (APS, 2015-09-08)
      Article
      Open Access
      Einstein-Podolsky-Rosen steering is a form of inseparability in quantum theory commonly acknowledged to be intermediate between entanglement and Bell nonlocality. However, this statement has so far only been proven for a ...
    • Measurement of sub-pulse-width temporal delays via spectral interference induced by weak value amplification 

      Salazar Serrano, L.J.; Janner, Davide; Brunner, Nicolas; Pruneri, Valerio; Pérez Torres, Juan (2014-01-27)
      Article
      Open Access
      We demonstrate experimentally a scheme to measure small temporal delays, much smaller than the pulse width, between optical pulses. Specifically, we observe an interference effect, based on the concepts of quantum weak ...
    • Passivity, complete passivity, and virtual temperatures 

      Skrzypczyk, Paul; Silva, Ralph; Brunner, Nicolas (OSA, 2015-05-19)
      Article
      Open Access
      We give a simple and intuitive proof that the only states which are completely passive, i.e., those states from which work cannot be extracted even with infinitely many copies, are Gibbs states at positive temperatures. ...
    • Thermodynamic cost of creating correlations 

      Huber, Marcus; Perarnau-Llobet, Martí; Hovhannisyan, Karen V.; Skrzypczyk, Paul; Klöckl, Claude; Brunner, Nicolas; Acín, Antonio (IOP, 2015-06-10)
      Article
      Open Access
      We investigate the fundamental limitations imposed by thermodynamics for creating correlations. Considering a collection of initially uncorrelated thermal quantum systems, we ask how much classical and quantum correlations ...