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Record entanglement of quantum memories

6 Jul 2022

Researchers have entangled two quantum memories over a 33-kilometer-long fiber optic connection – a record and an important step toward the quantum internet.

A network in which data transmission is perfectly secure against hacking? If physicists have their way, this will become reality one day with the help of the quantum mechanical phenomenon known as entanglement. For entangled particles, the rule is: If you measure the state of one of the particles, then you automatically know the state of the other. It makes no difference how far away the entangled particles are from each other. This is an ideal state of affairs for transmitting information over long distances in a way that renders eavesdropping impossible.

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