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Sending Quantum Messages Through Space

Mon, 2015-07-27 00:39 - admin
Summary: 

Fragile photon states useful for quantum communication can be faithfully transmitted and distinguished over a link between an orbiting satellite and a telescope on Earth.

Paolo Villoresi and colleagues at the University of Padova in Italy report [1] that photons—acting as carriers of quantum information—preserve their state, on which such information is encoded, even after having been reflected by satellites located more than a thousand kilometers away from Earth. Read more at http://physics.aps.org/articles/v8/68.