I don't think that's a correct analogy. This announcement is about signal detection in the presence of noise not information decryption. My interpretation of t

I don't think that's a correct analogy. This announcement is about signal detection in the presence of noise not information decryption. My interpretation of the article is that two noisy quantum channels (where each individual channel is too noisy to recover any information) can have their noisy results combined to recover clean information. There is no classical analogy to this case. If two classical channels are too noisy to recover information from them individually, then there is no way to combine the noisy results to recover any information.