One of the widely accepted properties of quantum entanglement is secrecy. Since scientists and researchers began working with quantum key distribution, entanglement has been considered an essential part of keeping communications private. What if entanglement didn't always mean secrecy, though? New work is shedding light on the nature of entanglement and quantum key distribution - and possibly proving that a high degree of entanglement does not necessarily lead to complete secrecy.
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"They are counting angels on heads of pins. I am not too concerned with their result. They are not addressing the important question. As Wheeler said: "The Question is: What is The Question?" The Question, in this case, is what are the simplest entangled states that are maximally secretive and can signal nonlocality always be used to destroy the secrecy in any practical system? Similarly, the results of Adrian Kent and Lucien Hardy that forbidding of signal nonlocality is sufficient for secrecy begs the really important question because living systems are alive because of signal nonlocality - in my opinion. If this is true, it means that quantum theory is violated by life." -- Jack Sarfatti