New Space and Tech

World Quantum Teleportation Record Broken

By Keith Cowing
April 8, 2013
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“An international research team using ESA’s Optical Ground Station in the Canary Islands has set a new distance world record in ‘quantum teleportation’ by reproducing the characteristics of a light particle across 143 km of open air. Funded by ESA, researchers from Austria, Canada, Germany and Norway transferred the physical properties of one particle of light – a photon – onto its ‘entangled’ partner via quantum teleportation, thereby bridging a distance of 143 km between the Jacobus Kapteyn Telescope on La Palma and ESA’s Optical Ground Station on adjacent Tenerife. Their results have been published in this week’s Nature Magazine. Once entangled, the measurement of a certain property – such as polarisation or spin – will yield the same result for both particles, no matter how far apart the particles are located, and without any further signal being physically passed between them. Quantum teleportation is not copying in the strictest sense however, since the act of transference destroys the original particle – its characteristics passing to its entangled counterpart.” More

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