Now showing items 1-3 of 3

    • Entangling the whole by beam splitting a part 

      Croal, Callum; Peuntinger, Christian; Chille, Vanessa; Marquardt, Christoph; Leuchs, Gerd; Korolkova, Natalia; Mišta Jr., Ladislav (2015-11-04) - Journal article
      A beam splitter is a basic linear optical element appearing in many optics experiments and is frequently used as a continuous-variable entangler transforming a pair of input modes from a separable Gaussian state into an ...
    • Free-space quantum signatures using heterodyne measurements 

      Croal, Callum; Peuntinger, Christian; Heim, Bettina; Khan, Imran; Marquardt, Christoph; Leuchs, Gerd; Wallden, Petros; Andersson, Erika; Korolkova, Natalia (2016-09-02) - Journal article
      Digital signatures guarantee the authorship of electronic communications. Currently used "classical" signature schemes rely on unproven computational assumptions for security, while quantum signatures rely only on the laws ...
    • Quantum correlations in continuous variable mixed states : from discord to signatures 

      Croal, Callum (University of St Andrews, 2016-11-30) - Thesis
      This thesis studies continuous variable mixed states with the aim of better understanding the fundamental behaviour of quantum correlations in such states, as well as searching for applications of these correlations. I ...