Entangled
No Secret Messages
What’s going on
Imagine two friends, each holding one of an entangled pair, on opposite sides of the world. Whatever Ana does to her particle, Ben’s results on their own still look like fair coin tosses, so he can’t read anything from them. Only when they compare lists by phone, light or letter do the matching pairs appear. So information still can’t travel faster than light.
Myth
When one particle is measured, the other instantly “reports” it.
Fact
The results are linked, but there is no usable signal.
Learn more
N. Gisin, Quantum Chance (Springer, 2014).
Play Myth or Fact? Read out either the sentence on the card or the myth above. Can everyone tell which is true?
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