Now showing items 1-5 of 5

    • Efficient heralding of polarization-entangled photons from type-0 and type-II spontaneous parametric downconversion in periodically poled KTiOPO 4 

      Steinlechner, Fabian; Gilaberte, Marta; Jofre, Marc; Scheidl, Thomas; Pérez Torres, Juan; Pruneri, Valerio; Ursin, Rupert (2014-09-01)
      Article
      Restricted access - publisher's policy
      Ultrabright sources of entangled photon pairs with high heralding efficiency are an important step in the pursuit of high-bit-rate entanglement-base quantum key distribution, as well as an enabling tool for loss-sensitive ...
    • Frequency conversion of structured light 

      Steinlechner, Fabian; Hermosa, Nathaniel; Pruneri, Valerio; Pérez Torres, Juan (Macmillan Publishers, 2016-02-15)
      Article
      Open Access
      Coherent frequency conversion of structured light, i.e. the ability to manipulate the carrier frequency of a wave front without distorting its spatial phase and intensity profile, provides the opportunity for numerous novel ...
    • Hong-Ou-Mandel interferometry on a biphoton beat note 

      Chen, Yuanyuan; Fink, Matthias; Steinlechner, Fabian; Pérez Torres, Juan; Ursin, Rupert (2019-05-24)
      Article
      Open Access
      Hong-Ou-Mandel interference, the fact that identical photons that arrive simultaneously on different input ports of a beam splitter bunch into a common output port, can be used to measure optical delays between different ...
    • Sources of photonic entanglement for applications in space 

      Steinlechner, Fabian (Universitat Politècnica de Catalunya, 2015-12-14)
      Doctoral thesis
      Open Access
      The nonlocal correlations of entangled systems are a feature inherent to quantum theory that is fundamentally at odds with our common-sense notions of realism and locality. Additionally, entanglement is an essential resource ...
    • Spatial mode detection by frequency upconversion 

      Sephton, Bereneice; Vallés Marín, Adam; Steinlechner, Fabian; Konrad, Thomas; Pérez Torres, Juan; Roux, Filippus S.; Forbes, Andrew (2019-02-01)
      Article
      Open Access
      The efficient creation and detection of spatial modes of light has become topical of late, driven by the need to increase photon bit-rates in classical and quantum communications. Such mode creation/detection is traditionally ...