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A Spooqy Affair in Space


An international team led by researchers at the Centre for Quantum Technologies at NUS, have shown that nanosatellites can generate quantum signals on board. This saves cost compared to using larger satellites.

 

Pictured left is a 2.6kg nanosatellite called “SpooQy-1”, floating in orbit 400 km above Earth. The data collected confirmed that the quantum sources it carried created pairs of entangled light particles, called photons.

 

Today’s internet already uses photons to carry data through optical fibres. The challenge in building a quantum internet is that optical losses in fibre limit quantum signals to distances of a few tens of kilometres. Satellites could reach further and usher in a new generation of communications technology.

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