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Physicists Set Quantum Record by Using Photons to Carry Messages From Electrons 2 Kilometers Apart

posted by janrinok on Saturday November 28 2015, @03:15AM   
from the shouting-quietly dept.

Phoenix666 writes:

In his previous work, Stanford physicist Leo Yu has entangled photons with electrons through fiber optic cables over a distance of several feet. Now, he and a team of scientists, including Professor Emeritus Yoshihisa Yamamoto, have correlated photons with electron spin over a record distance of 1.2 miles (1.93 kilometers).

"Electron spin is the basic unit of a quantum computer," Yu said. "This work can pave the way for future quantum networks that can send highly secure data around the world."

To do this, Yu and his team had to make sure that the correlation could be preserved over long distances – a key challenge given that photons have a tendency to change orientation while traveling in optical fibers.

Let's see the NSA surveille ansibles.

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Original Submission

• snake oil (Score: 2) by dmc on Sunday November 29 2015, @03:17AM

  by dmc (188) on Sunday November 29 2015, @03:17AM (#269328)

  this stuff may be like a well from some new cybersecurity fountain of youth, but it sure sounds like it's being sold as snake oil-

  Quantum supercomputers promise to be exponentially faster and more powerful than traditional computers, Yu said, and can communicate with immunity to hacking or spying. With this work, the team has brought the quantum networks one step closer to reality.

  Last I checked you had to be a diplomat to be magically immune.

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