Related topics: quantum information

Quantum teleportation achieved over 16 km

( -- Scientists in China have succeeded in teleporting information between photons further than ever before. They transported quantum information over a free space distance of 16 km (10 miles), much further than ...

143 km: Physicists break quantum teleportation distance

Physicists at the University of Vienna and the Austrian Academy of Sciences have achieved quantum teleportation over a record distance of 143 km. The experiment is a major step towards satellite-based quantum communication. ...

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Quantum channel

In quantum information theory, a quantum channel is a communication channel which can transmit quantum information, as well as classical information. An example of quantum information is the state of a qubit. An example of classical information is a text document transmitted over the internet.

More formally, quantum channels are completely positive, trace preserving maps between spaces of operators, as defined more precisely below.

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