Distributing entanglement with separable states.

نویسندگان

  • Christian Peuntinger
  • Vanessa Chille
  • Ladislav Mišta
  • Natalia Korolkova
  • Michael Förtsch
  • Jan Korger
  • Christoph Marquardt
  • Gerd Leuchs
چکیده

We experimentally demonstrate a protocol for entanglement distribution by a separable quantum system. In our experiment, two spatially separated modes of an electromagnetic field get entangled by local operations, classical communication, and transmission of a correlated but separable mode between them. This highlights the utility of quantum correlations beyond entanglement for the establishment of a fundamental quantum information resource and verifies that its distribution by a dual classical and separable quantum communication is possible.

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عنوان ژورنال:
  • Physical review letters

دوره 111 23  شماره 

صفحات  -

تاریخ انتشار 2013