Quantum cryptography takes flight

Quantum cryptography takes flight

Successful reading of photon beam sent from airplane may one day lead to encrypted satellite communications

By Andrew Grant, 18:11 PM April 1, 2013

Quantum cryptography has entered the friendly skies. A precise beam of photons sent from an airplane allowed researchers on the ground to create a nearly unbreakable encryption key to protect information. The experiment, reported March 31 in Nature Photonics, is an important step toward creating a secure global communication network based on beaming photons to and from satellites.

“It is a technical tour de force,” says Seth Lloyd, a mechanical engineer at MIT who was not involved in the st...

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