4 ms·
It's completely different. The underlying mechanism is the fact that observing the state on one member of an entangled pair changes the state of the other membe
by charlieflowers 9y ago
It's completely different. The underlying mechanism is the fact that observing the state on one member of an entangled pair changes the state of the other member.
- OscarCunningham 9y agoMore specifically, the important fact is that it's impossible for three particles to be (maximally) entangled simultaneously. So you can verify that no one eavesdropped when you agreed your one-time-pad.
- Kemschumam 9y agoHave you seen this recent result http://news.mit.edu/2018/physicists-create-new-form-light-0215 http://news.mit.edu/2018/physicists-create-new-form-light-02.... Does it change your thoughts on the utility of quantum cryptography?
- OscarCunningham 9y agoThey get three photons to be entangled, but not "maximally entangled" in the (impossible) way that would be needed for someone to listen to a communication without being detected.