skip to main content

Bell violation using entangled photons without the fair-sampling assumption.(RESEARCH: LETTER)(Report)

Giustina, Marissa ; Mech, Alexandra ; Ramelow, Sven ; Wittmann, Bernhard ; Kofler, Johannes ; Beyer, Jorn ; Lita, Adriana ; Calkins, Brice ; Gerrits, Thomas ; Nam, Sae Woo ; Ursin, Rupert ; Zeilinger, Anton

Nature, May 9, 2013, Vol.497(7448), p.227(4) [Periódico revisado por pares]

Texto completo disponível

Citações Citado por
  • Título:
    Bell violation using entangled photons without the fair-sampling assumption.(RESEARCH: LETTER)(Report)
  • Autor: Giustina, Marissa ; Mech, Alexandra ; Ramelow, Sven ; Wittmann, Bernhard ; Kofler, Johannes ; Beyer, Jorn ; Lita, Adriana ; Calkins, Brice ; Gerrits, Thomas ; Nam, Sae Woo ; Ursin, Rupert ; Zeilinger, Anton
  • Assuntos: Bell'S Theorem – Research ; Photons – Properties ; Quantum Mechanics – Research
  • É parte de: Nature, May 9, 2013, Vol.497(7448), p.227(4)
  • Descrição: The violation of a Bell inequality is an experimental observation that forces the abandonment of a local realistic viewpoint-namely, one in which physical properties are (probabilistically) defined before and independently of measurement, and in which no physical influence can propagate faster than the speed of light. All such experimental violations require additional assumptions depending on their specific construction, making them vulnerable to so-called loopholes. Here we use entangled photons to violate a Bell inequality while closing the fair-sampling loophole, that is, without assuming that the sample of measured photons accurately represents the entire ensemble. To do this, we use the Eberhard form of Bell's inequality, which is not vulnerable to the fairsampling assumption and which allows a lower collection efficiency than other forms. Technical improvements of the photon source and high-efficiency transition-edge sensors were crucial for achieving a sufficiently high collection efficiency. Our experiment makes the photon the first physical system for which each of the main loopholes has been closed, albeit in different experiments. [PUBLICATION ]
  • Idioma: Inglês

Buscando em bases de dados remotas. Favor aguardar.